Telegram (software): Difference between revisions
Tags: Mobile edit Mobile web edit Advanced mobile edit |
No edit summary |
||
Line 68: | Line 68: | ||
| collapsetext = |
| collapsetext = |
||
}} |
}} |
||
'''Telegram''' is a [[Cloud computing|cloud]]-based [[instant messaging]] and [[voice over IP]] service. Telegram [[client (computing)|client]] apps are available for [[Android (operating system)|Android]], [[iOS]], [[Windows Phone]], [[Windows NT]], [[macOS]] and [[Linux]].<ref name="teleapps">{{cite web|url=https://telegram.org/apps|title=List of Telegram applications|date=6 February 2014}}</ref> Users can send messages and exchange photos, videos, [[Sticker (messaging)|sticker]]s, audio and files of any type. |
'''Telegram''' is a [[Cloud computing|cloud]]-based [[instant messaging]] and [[voice over IP]] service that is hugely popular with White Supremacists and Nazis. Telegram [[client (computing)|client]] apps are available for [[Android (operating system)|Android]], [[iOS]], [[Windows Phone]], [[Windows NT]], [[macOS]] and [[Linux]].<ref name="teleapps">{{cite web|url=https://telegram.org/apps|title=List of Telegram applications|date=6 February 2014}}</ref> Users can send messages and exchange photos, videos, [[Sticker (messaging)|sticker]]s, audio and files of any type. |
||
Telegram's client-side code is [[open-source software]] but the source code for recent versions is not always immediately published,<ref name="GitHub">{{cite web|url=https://github.com/DrKLO/Telegram/commits/master|title=Latest commits from official repository (Android version)|date=10 April 2016|website=Github|access-date=}}</ref> whereas its server-side code is closed-source and proprietary.<ref>{{cite web|url=https://telegram.org/faq#q-why-not-open-source-everything|title=Telegram F.A.Q.|website=Telegram|access-date=2017-10-01}}</ref> The service also provides [[Application programming interface|APIs]] to independent developers. In March 2018, Telegram stated that it had 200 million [[monthly active users]].<ref name="TelegramUsersMarch2018">{{cite web|url=https://telegram.org/blog/200-million|title=200,000,000 Monthly Active Users|date=22 March 2018|website=Telegram}}</ref> |
Telegram's client-side code is [[open-source software]] but the source code for recent versions is not always immediately published,<ref name="GitHub">{{cite web|url=https://github.com/DrKLO/Telegram/commits/master|title=Latest commits from official repository (Android version)|date=10 April 2016|website=Github|access-date=}}</ref> whereas its server-side code is closed-source and proprietary.<ref>{{cite web|url=https://telegram.org/faq#q-why-not-open-source-everything|title=Telegram F.A.Q.|website=Telegram|access-date=2017-10-01}}</ref> The service also provides [[Application programming interface|APIs]] to independent developers. In March 2018, Telegram stated that it had 200 million [[monthly active users]].<ref name="TelegramUsersMarch2018">{{cite web|url=https://telegram.org/blog/200-million|title=200,000,000 Monthly Active Users|date=22 March 2018|website=Telegram}}</ref> |
Revision as of 00:16, 10 April 2020
![]() | |
![]() Telegram running on an iPhone | |
Developer(s) | Telegram FZ LLC Telegram Messenger Inc. |
---|---|
Initial release | 14 August 2013 |
Repository | |
Written in | C++ |
Platform | Android, iOS, Windows Phone, Windows NT, macOS, Linux, Web platform |
Available in | 14 languages[1][2] |
Type | Instant messaging |
License | GNU GPLv2 or GPLv3 (clients),[3] proprietary (server) |
Website | telegram |
![]() | |
Founded | March 2013 |
---|---|
Headquarters | London, United Kingdom (legal domicile) Dubai, United Arab Emirates (operational center) |
Area served | Global |
Founder(s) | |
CEO | Pavel Durov |
Industry | Software |
Employees | 351 (2019)[4] |
URL | telegram |
Telegram is a cloud-based instant messaging and voice over IP service that is hugely popular with White Supremacists and Nazis. Telegram client apps are available for Android, iOS, Windows Phone, Windows NT, macOS and Linux.[3] Users can send messages and exchange photos, videos, stickers, audio and files of any type.
Telegram's client-side code is open-source software but the source code for recent versions is not always immediately published,[5] whereas its server-side code is closed-source and proprietary.[6] The service also provides APIs to independent developers. In March 2018, Telegram stated that it had 200 million monthly active users.[7]
Default messages and media in Telegram are encrypted when stored on its servers, but can be accessed by the Telegram service provider, who holds the encryption keys. In addition Telegram provides optional end-to-end encrypted "secret" chats between two online users, yet not for groups or channels.[8]
The client-server communication is also encrypted.[9] The service provides end-to-end encryption for voice calls.[10]
History
Development
Telegram was launched in 2013 by the brothers Nikolai and Pavel Durov. Previously, the pair founded the Russian social network VK, which they left when it was taken over by the Mail.ru Group.[11][12] Nikolai Durov created the MTProto protocol that is the basis for the messenger, while Pavel provided financial support and infrastructure through his Digital Fortress fund with partner Axel Neff joining as a second co-founder.[13] Telegram Messenger LLP states that its end goal is not to bring profit,[14][15] but it is not currently structured as a non-profit organization.[16]
Telegram is registered as both an English LLP[17] and an American LLC.[18] It does not disclose where it rents offices or which legal entities it uses to rent them, citing the need to "shelter the team from unnecessary influence" and protect users from governmental data requests.[19] Pavel Durov has said that the service was headquartered in Berlin, Germany, between 2014[20] and early 2015, but moved to different jurisdictions after failing to obtain residence permits for everyone on the team.[21] Durov left Russia and is said to be moving from country to country with a small group of computer programmers consisting of 15 core members.[11][22] According to press reports, Telegram had employees in St. Petersburg.[21] The Telegram team is currently based in Dubai.[23]
Usage numbers
![]() | Graphs are unavailable due to technical issues. There is more info on Phabricator and on MediaWiki.org. |
In October 2013, Telegram had 100,000 daily active users.[12] On 24 March 2014, Telegram announced that it had reached 35 million monthly users and 15 million daily active users.[24] In October 2014, South Korean governmental surveillance plans drove many of its citizens to switch to Telegram.[20] In December 2014, Telegram announced that it had 50 million active users, generating 1 billion daily messages, and that it had 1 million new users signing up on its service every week[25], traffic doubled in five months with 2 billion daily messages.[26] In September 2015, an announcement stated that the app had 60 million active users and delivered 12 billion daily messages.[27] In February 2016, Telegram announced that it had 100 million monthly active users, with 350,000 new users signing up every day, delivering 15 billion messages daily.[28] In December 2017, Telegram reached 180 million monthly active users.[23] In March 2018, Telegram reached 200 million monthly active users.[7] On March 14, 2019, Pavel Durov claimed that “3 million new users signed up for Telegram within the last 24 hours.”[29] Durov didn't specify what prompted this flood of new sign-ups, but the period matched a prolonged technical outage experienced by Facebook and its family of apps, including Instagram.[30]
According to the U.S. Securities and Exchange Commission, the number of monthly Telegram users as of October 2019 is 300 million people worldwide.[31]
Features
Account
![](http://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Telegram_account_self-destruction.png/220px-Telegram_account_self-destruction.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Telegram_account_is_limited.png/220px-Telegram_account_is_limited.png)
Telegram accounts are tied to telephone numbers and are verified by SMS.[32] Users can add multiple devices to their account and receive messages on each one. Connected devices can be removed individually or all at once. The associated number can be changed at any time and when doing so, the user's contacts will receive the new number automatically.[32][33][34] In addition, a user can set up an alias that allows them to send and receive messages without exposing their phone number.[35] Telegram accounts can be deleted at any time and they are deleted automatically after six months of inactivity by default, which can optionally be changed to 1 month and 12 months. Users can replace exact "last seen" timestamps with broader messages such as "last seen recently".[36]
The default method of authentication that Telegram uses for logins is SMS-based single-factor authentication.[37][38] All that is needed in order to log into an account and gain access to that user's cloud-based messages is a one-time passcode that is sent via SMS to the user's phone number.[38][39] These login SMS messages are known to have been intercepted in Iran, Russia and Germany, possibly in coordination with phone companies.[39][40][41] Pavel Durov has said that Telegram users in "troubled countries" should enable two-factor authentication by creating passwords, which Telegram allows, but does not require.[39][40]
Cloud-based messages
Telegram's default messages are cloud-based and can be accessed on any of the user's connected devices. Users can share photos, videos, audio messages and other files (up to 1.5 gigabyte in size per file). Users can send messages to other users individually or to groups of up to 200,000 members.[42] Sent messages can be edited within 48 hours after they have been sent and deleted at any time on both sides. This gives user an ability to correct typos and retract messages that were sent by mistake.[43] The transmission of messages to Telegram Messenger LLP's servers is encrypted with the service's MTProto protocol.[44] According to Telegram's privacy policy, "all data is stored heavily encrypted and the encryption keys in each case are stored in several other DCs in different jurisdictions. This way local engineers or physical intruders cannot get access to user data".[45] This makes the messages' security roughly comparable to that of e-mail. Here, most providers employ client-server encryption as well, however usually with the standardized protocol Transport Layer Security. E-mails may or may not be encrypted on the servers. Telegram cloud messages and media remain on the servers at least until deleted by all participants.
Bots
In June 2015, Telegram launched a platform for third-party developers to create bots.[46] Bots are Telegram accounts operated by programs. They can respond to messages or mentions, can be invited into groups and can be integrated into other programs. It also accepts online payments with credit cards and Apple Pay.[47] Dutch website Tweakers reported that an invited bot can potentially read all group messages when the bot controller changes the access settings silently at a later point in time. Telegram pointed out that it considered implementing a feature that would announce such a status change within the relevant group.[48] Also there are inline bots, which can be used from any chat screen. In order to activate an inline bot, user needs to type in the message field a bot's username and query. The bot then will offer its content. User can choose from that content and send it within a chat.[49]
Channels
In September 2015, Telegram added channels.[50] Channels are a form of one-way messaging where admins are able to post messages but other users are not. Any user is able to create and subscribe to channels. Channels can be created for broadcasting messages to an unlimited number of subscribers.[51] Channels can be publicly available with an alias and a permanent URL so anyone can join. Users who join a channel can see the entire message history. Users can join and leave channels at any time. Depending on a channel's settings, messages may be signed with the channel's name or with the username of the admin who posted them. Non-admin users are unable to see other users who've subscribed to the channel. Furthermore, users can mute a channel, meaning that the user will still receive messages, but won't be notified. Admins can give permission to post comments on the Telegram channel with help of bots. The admin of the channel can obtain general data about the channel. Each message has its own view counter, showing how many users have seen this message, this includes views from forwarded messages. As of May 2019, the creator of a channel can add a discussion group, a separate group where messages in the channel are automatically posted for subscribers to communicate.[52]
In December 2019, Bloomberg moved their messenger-based newsletter service from WhatsApp to Telegram after the former banned bulk and automated messaging.[53][54] The news service is attempting to grow its audience outside the U.S.[54]
Stickers
Stickers are cloud-based, high-definition images intended to provide more expressive emoji. When typing in an emoji, the user is offered to send the respective sticker instead. Stickers come in collections called "sets", and multiple stickers can be offered for one emoji. Telegram comes with one default sticker set,[55] but users can install additional sticker sets provided by third-party contributors. Sticker sets installed from one client become automatically available to all other clients. Sticker images use WebP file format, which is better optimized to be transmitted over internet.
Drafts
Drafts are unfinished messages synced across user devices. One can start typing a message on one device and continue on another. The draft will persist in editing area on any device until it is sent or removed.[56]
Secret chats
![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Telegram_secret_chat_-_en.png/200px-Telegram_secret_chat_-_en.png)
Messages can also be sent with client-to-client encryption in so-called secret chats. These messages are encrypted with the service's MTProto protocol.[57] Unlike Telegram's cloud-based messages, messages sent within a secret chat can be accessed only on the device upon which the secret chat was initiated and the device upon which the secret chat was accepted; they cannot be accessed on other devices.[12][44][58] Messages sent within secret chats can, in principle, be deleted at any time and can optionally self-destruct.[59]
Secret chats have to be initiated and accepted by an invitation, upon which the encryption keys for the session are exchanged. Users in a secret chat can verify that no man-in-the-middle attack has occurred by comparing pictures that visualize their public key fingerprints.[60]
According to Telegram, secret chats have supported perfect forward secrecy since December 2014. Encryption keys are periodically changed after a key has been used more than 100 times or has been in use for more than a week.[61] Old encryption keys are destroyed.[33][34][62]
Windows and Linux users are still not able to use secret chats using the official Telegram Desktop app while the official macOS-only client supports them.[63]
Secret chats are not available for groups or channels.
Telegram's local message database is not encrypted by default.[61] Some Telegram clients allow users to encrypt the local message database by setting a passphrase.[64]
Voice calls
In the end of March 2017, Telegram introduced its own voice calls. The calls are built upon the end-to-end encryption of Secret Chats. Connection is established as peer-to-peer whenever possible, otherwise the closest server to the client is used. According to Telegram, there is a neural network working to learn various technical parameters about a call to provide better quality of the service for future uses. After a brief initial trial in Western Europe, voice calls are now available for use in most countries.[65]
Telescope (video messages)
Since version 4.1, released in May 2017, Telegram offers a dedicated video hosting platform called Telescope.[66] The round videos can be up to one minute long and autoplay. When posted in a public channel on Telegram, the videos are also uploaded to and viewable without an account. However, Telegram video messages and "Telescope" videos sent within non-public chats or groups are not published.
Live locations
For either 15 minutes, one hour, or eight hours, Telegram users can share their live location in a chat since version 4.4 released in October 2017.[67] If multiple users share their live location within a group, they are shown on an interactive map. Sharing the 'live location' can be stopped at any time.
Social login
In February 2018, Telegram launched their social login feature to its users, named as Telegram Login.[68] It features a website widget that could be embedded into websites, allowing users to sign into a third party website with their Telegram account. The gateway sends users' Telegram name, username, and profile picture to the website owner, while users' phone number remains hidden. The gateway is integrated with a bot, which is linked with the developer's specific website domain.[69]
Passport
In July 2018, Telegram introduced their online authorisation and identity management system, Telegram Passport, for platforms that require real-life identification.[70] It asks users to upload their own official documents such as passport, identity card, driver license, etc. When an online service requires such identification documents and verification, it forwards the information to the platform with the user's permission. Telegram stated that it does not have access to the data, while the platform will only share the information to the authorised recipient.[71] However, the service was criticised for being vulnerable to online brute force attacks.[72]
Architecture
Encryption scheme
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/78/Explanation_of_secret_chats_%28Telegram%29.png/200px-Explanation_of_secret_chats_%28Telegram%29.png)
Telegram uses a symmetric encryption scheme called MTProto. The protocol was developed by Nikolai Durov and other developers at Telegram and is based on 256-bit symmetric AES encryption, 2048-bit RSA encryption and Diffie–Hellman key exchange.[57]
Servers
Telegram Messenger LLP has servers in a number of countries throughout the world to improve the response time of their service.[73] Telegram's server-side software is closed-source and proprietary. Pavel Durov has said that it would require a major architectural redesign of the server-side software to connect independent servers to the Telegram cloud.[74]
Client apps
Telegram has various client apps, some developed by Telegram Messenger LLP and some by the community. Most of them are free and open-source and released under the GNU General Public Licence version 2 or 3.
Common specifications:
- No cloud backup option for secret chat
Name | Platform(s) | Official | Source code license | Support for secret chats | Notes |
---|---|---|---|---|---|
Telegram | Android 2.3 or later | Yes | GPLv2 or later[75][76] | Yes | Supports tablets[77] and Android Wear smart watches.[78] Support synchronisation between multiple devices. |
Telegram Messenger | iOS 9.0 or later, watchOS 5.0 or later | Yes | GPLv2 or later[75][79] | Yes | Launched in August 2013 for iPhone and iPod Touch and relaunched in July 2014 with support for iPad and Apple Watch.[80] |
Telegram X | Android[81] | Yes[82] | Proprietary | Yes | An alternative Telegram client written from scratch, with higher speed, slicker animations, themes and more efficient battery use.
iOS version is written with Swift. Android version based on TDLib. The iOS version was discontinued, with its code merged with the main Telegram app. |
Telegram Messenger | Windows Phone | Yes | GPLv2 or later[75] | Yes | Provide synchronization between all platforms |
Telegram | Firefox OS | Yes | GPLv3[83] | No | Based on Webogram. |
Telegram Desktop | Windows, macOS, and Linux | Yes | GPLv3 with OpenSSL exception[84] | No | Qt-based desktop client. The Windows client is a traditional desktop app published in three flavors:
With installer, portable, Windows Store app. |
Telegram | macOS | Yes | GPLv2[85] | Yes | Native macOS client. |
Telegram | Google Chrome and Chrome OS | Yes | GPLv3[83] | No | Based on Webogram, published on the Chrome Web Store. |
Telegram CLI[39][86] | Linux, FreeBSD and macOS | No[75] | GPLv2[86] | Yes | Command-line interface for Telegram. |
Unigram[87][88] | Windows 10, Windows 10 Mobile | No[75] | GPLv3 | Yes | A Universal Windows Platform app published on the Microsoft Store. |
Telegram[third-party source needed] | Ubuntu Touch | No | GPLv2[89] | Yes | Based on TelegramQML.[90] |
Sailorgram[third-party source needed] | Sailfish OS | No | GPLv3[91] | Yes | Based on Cutegram which based on Qt.[92] |
Telegram-FOSS | Android 2.3 or later | No | GPLv2 or later[93] | Yes | Fork of official android version replacing non-FOSS components with equivalent FOSS ones. |
telega.el | Emacs | No | GPLv3 or later[94] | Yes | telega.el is built on top of the official library provided by Telegram: tdlib[1]. Available as MELPA and GUIX packages. |
Users can also access Telegram's cloud-based messages via an official JavaScript web browser interface called Telegram Web (aka Webogram). Users can share images, files and emojis with previously-added contacts; this works in most modern browsers, such as Firefox, Safari, and Google Chrome.[75][83]
APIs
Telegram has public APIs with which developers can access the same functionality as Telegram's official apps to build their own messaging applications.[95] In February 2015, creators of the unofficial Whatsapp+ client released the Telegram Plus app, later renamed to Plus Messenger, after their original project got a cease-and-desist order from WhatsApp.[96][97] In September 2015, Samsung released a messaging application based on these APIs.[98]
Telegram also offers an API that allows developers to create bots, which are accounts controlled by programs.[99][100] In February 2016, Forbes launched an AI-powered news bot that pushes popular stories to subscribers and replies to search queries with relevant articles.[101] TechCrunch launched a similar bot in March 2016.[102]
Reception
Security
Telegram's security model has received notable criticism by cryptography experts. They criticized the general security model of permanently storing all contacts, messages and media together with their decryption keys on its servers by default and by not enabling end-to-end encryption for messages by default.[103][104] Pavel Durov has argued that this is because it helps to avoid third-party unsecure backups, and to allow users to access messages and files from any device.[105] Cryptography experts have furthermore criticized Telegram's use of a custom-designed encryption protocol that has not been proven reliable and secure.[103][106][107][108]
Cryptography experts have expressed both doubts and criticisms on Telegram's MTProto encryption scheme, saying that deploying home-brewed and unproven cryptography may render the encryption vulnerable to bugs that potentially undermine its security, due to a lack of scrutiny.[103][106][107] It has also been suggested that Telegram did not employ developers with sufficient expertise or credibility in this field.[108]
Critics have also disputed claims by Telegram that it is "more secure than mass market messengers like WhatsApp and Line",[44] because WhatsApp applies end-to-end encryption to all of its traffic by default and uses the Signal Protocol, which has been "reviewed and endorsed by leading security experts", while Telegram does neither and insecurely stores all messages, media and contacts in their cloud.[103][104] Since July 2016, Line has also applied end-to-end encryption to all of its messages by default.[109]
On 26 February 2014, the German consumer organization Stiftung Warentest evaluated several data-protection aspects of Telegram, along with other popular instant-messaging clients. Among the aspects considered were: the security of the data transmission, the service's terms of use, the accessibility of the source code and the distribution of the app. Telegram was rated 'critical' (kritisch) overall. The organization was favorable to Telegram's secure chats and partially open source code, but criticized the mandatory transfer of contact data to Telegram's servers and the lack of an imprint or address on the service's website. It noted that while the message data is encrypted on the device, it could not analyse the transmission due to a lack of source code.[110]
The Electronic Frontier Foundation (EFF) listed Telegram on its "Secure Messaging Scorecard" in February 2015. Telegram's default chat function received a score of 4 out of 7 points on the scorecard. It received points for having communications encrypted in transit, having its code open to independent review, having the security design properly documented, and having completed a recent independent security audit. Telegram's default chat function missed points because the communications were not encrypted with keys the provider didn't have access to, users could not verify contacts' identities, and past messages were not secure if the encryption keys were stolen. Telegram's optional secret chat function, which provides end-to-end encryption, received a score of 7 out of 7 points on the scorecard.[111] The EFF said that the results "should not be read as endorsements of individual tools or guarantees of their security", and that they were merely indications that the projects were "on the right track".[111]
In December 2015, two researchers from Aarhus University published a report in which they demonstrated that MTProto does not achieve indistinguishability under chosen-ciphertext attack (IND-CCA) or authenticated encryption.[112] The researchers stressed that the attack was of a theoretical nature and they "did not see any way of turning the attack into a full plaintext-recovery attack". Nevertheless, they said they saw "no reason why [Telegram] should use a less secure encryption scheme when more secure (and at least as efficient) solutions exist".[113] The Telegram team responded that the flaw does not affect message security[114] and that "a future patch would address the concern".[115] Telegram 4.6, released in December 2017, supports MTProto 2.0, which now satisfied the conditions for IND-CCA.[104][116] MTProto 2.0 is seen by qualified cryptographers as a vast improvement to Telegram's security.[104]
In April 2016, accounts of several Russian opposition members were hijacked by intercepting the SMS messages used for login authorization.[39] In response, Telegram recommended using the optional two-factor authentication feature.[39] In May 2016, the Committee to Protect Journalists and Nate Cardozo, senior staff attorney at Electronic Frontier Foundation, recommended against using Telegram because of "its lack of end-to-end encryption [by default] and its use of non-standard MTProto encryption protocol, which has been publicly criticized by cryptography researchers, including Matthew Green".[103]
In June 2017, Pavel Durov claimed publicly that U.S. intelligence agencies tried to bribe the company's developers to weaken Telegram's encryption or install a backdoor during their visit to the U.S. in 2016.[117][118]
In 2018 Telegram sent a message to all Iranian users stating Telegram Talai and Hotgram unofficial clones are not secure.[119]
Telegram promised since at least March 2014 that "all code will be released eventually", including all the various client applications (Android, iOS, desktop, etc.) and the server-side code.[120] As of February 2020, Telegram still hasn't published their server-side source code.[121][122]
In June 9, 2019, The Intercept released leaked Telegram messages exchanged between current Brazilian Minister of Justice and former judge Sérgio Moro and federal prosecutors.[123] The hypothesis is that either mobile devices were hacked by SIM swap or computers invaded.[124] The Telegram team tweeted that it was either because the user had malware or they were not using 2-step verification.[125]
In June 12, 2019, Telegram confirmed that it suffered a Denial-of-service attack which disrupted normal app functionality for approximately one hour. Pavel Durov tweeted that the IP addresses used in the attack mostly came from China.[126]
In December 2019 media wrote about a numerous Telegram account takeovers of Russian businessmen that involved bypass of SMS second factor authentication. Takeover of Telegram account was also offered on dark web forums for $4000. Group-IB security company suggested SS7 mobile signalling protocol weaknesses, illegal usage of surveillance equipment or telecom insider attacks.[127][128]
Cryptography contests
Telegram has organized two cryptography contests to challenge its own security. Third parties were asked to break the service's cryptography and disclose the information contained within a secret chat between two computer-controlled users. A reward of respectively US$200,000 and US$300,000 was offered. Both of these contests expired with no winners.[129][130] Security researcher Moxie Marlinspike and commenters on Hacker News criticized the first contest for being rigged or framed in Telegram's favor and said that Telegram's statements on the value of these contests as proof of the cryptography's quality are misleading.[131][132][133]
Censorship
Countries blocking Telegram:
![]() | Graphs are unavailable due to technical issues. There is more info on Phabricator and on MediaWiki.org. |
Iran
Telegram was open and working in Iran without any VPN or other circumvention methods in May 2015.[134] In August 2015, the Iranian Ministry of ICT asserted that Telegram had agreed to restrict some of its bots and sticker packs in Iran at the request of the Iranian government.[135] According to an article published on Global Voices, these features were being used by Iranians to "share satirical comments about the Iranian government". The article also noted that "some users are concerned that Telegram's willingness to comply with Iranian government requests might mean future complicity with other Iranian government censorship, or even allow government access to Telegram's data on Iranian users".[135] Telegram has stated that all Telegram chats are private territory and that they do not process any requests related to them. Only requests regarding public content (bots and sticker packs) will be processed.[136] In May 2016, the Iranian government asked all messaging apps, including Telegram, to move all Iranian users' data to Iranian servers.[137] On 20 April 2017, the Iranian government completely blocked Telegram's new voice calls, a service that allows individuals to make calls via secure, end-to-end encryption, and keep their conversations private.[138]
On December 30, 2017, during anti-government demonstrations across Iran, Telegram has shut down a channel of the Iranian opposition that published calls to use Molotov cocktails against the police, after receiving a complaint from the Iranian government. Pavel Durov explained that the reason for the blocking was a "no calls to violence" policy and confirmed that criticizing local authorities, challenging the status quo and engaging in political debate were seen as "OK" by the platform, while "promoting violence" was not.[139] The opposition group promised to comply with Telegram rules and created a new channel which amassed 700,000 subscribers in less than 24 hours.[140] On December, 31, the Iranian government announced that Telegram has been "temporarily restricted" in order to "ensure calm and security" after the company said it refused to shut down peaceful protesting channels.[141] On January, 13, the app was unblocked by an order of the president Hassan Rouhani, who said that "more than 100,000 jobs had been lost” in Iran as a result of the ban on Telegram. Channels of the opposition remain operational.[142]
In March 2018, Iran's chairman for the Committee for Foreign policy and National Security Alaeddin Boroujerdi announced that Telegram has been targeted to be fully blocked in Iran by 20 April 2018,[143] citing Telegram's role in facilitating the winter protests and the need to promote local apps.[144] President Rouhani agreed with the need to break Telegram's monopoly in Iran, but maintained that he was opposed to a new blockade and did not see it as an effective measure to promote local apps.[145] Iranian MP Mahmoud Sadeghi noted that during the two weeks that Telegram was blocked in January 2018, 30 million Iranians (75% of Telegram's users in Iran) did not start using local messaging apps, but instead turned to VPN services to circumvent the block, rendering the blockade ineffective.[146]
Since the end of the riots, the Iranian government employs a customized version of Telegram that is under their domain.[147]
On September 27, 2019, Bijan Ghasemzadeh, the Iranian prosecutor who ordered the block on Telegram, was arrested for charges of corruption. It is unclear whether or not the charges were related to the ban on Telegram.[148]
China
In July 2015, it was reported that China blocked access to Telegram Messenger. According to state-owned People's Daily, Chinese human rights lawyers used Telegram to criticize the Chinese Government and the Communist Party of China.[149]
On August 28, 2019 the Hong Kong Internet Service Providers Association announced that the Hong Kong government had plans to block Telegram.[150]
Bahrain
In June 2016, it was found that some ISPs in Bahrain had started to block Telegram.[151] In June 2017 the service faced serious pressure from Russian regulator Roscomnadzor, who tried to force Telegram to register in the official telecommunication services registry, which implies serious liability for a registered party. After week-long negotiations and seeming imminent blockage of the service, the conflict ceased after high officials pulled some strings with the regulator.[clarification needed]
Indonesia
On 14 July 2017, eleven domain name servers related to Telegram were banned by the Indonesian Communication and Information Ministry with the possibility of closing all Telegram applications in Indonesia if Telegram did not make a standard operating procedure to maintain content that was considered unlawful in the apps.[152] In August 2017, Indonesian Government has opened full access of Telegram, after Telegram has made self censorship about negative contents mainly radicalism and terrorism. Telegram said that about 10 channels/groups have been deleted from Telegram everyday due to are categorized as negative contents.[153]
Pakistan
In October 2017, Telegram was inaccessible to users in Pakistan,[154] and as of 17 November 2017, it has been completely blocked as per instructions from PTA, Pakistan's largest ISP, PTCL mentioned this in a tweet to a user.[155]
Russia
On 13 April 2018, Telegram was banned in Russia by a Moscow court, due to its refusal to grant the Federal Security Service (FSB) access to encryption keys needed to view user communications as required by federal anti-terrorism law.[156][157] The ban has been enforced by blocking over 19 million IP addresses associated with the service.[158] They include many used by Amazon Web Services and Google Cloud Platform, due to Telegram's use of the providers to route messages. However, this led to unintended collateral damage due to usage of the platforms by other services in the country, including retail, Mastercard SecureCode, and Mail.ru's Tamtam messaging service. Users ended up needing to use VPN to access the service as a result of the internet censorship.[159][160] On 17 April 2018, Russia asked App Store, Play Store and APKMirror to pull Telegram from stores. App Store and Play Store refused the request of Russian government.[161][162]
On 28 March 2018, Roskomnadzor reportedly[163] sent a legally binding letter to Apple asking it to remove the app from its Russian App Store and block it from sending push notifications to local users who have already downloaded the app.
On December 27, 2018 the biggest Russian web search site Yandex.ru removed telegram.org from their search results.[164]
India
In 2019, it was reported that some ISPs in India were blocking Telegram traffic, including its official website. [165] Internet Freedom Foundation, an Indian digital liberties organisation flied an RTI on whether Department of Telecommunications(DoT) had banned Telegram or requested ISPs to block traffic. The response from DoT said that it had no information on why the ISPs were blocking Telegram. [166] There is little transparency from the DoT and the ISPs in India around content blocking on the Internet, with the DoT using opaque laws to order content removal and the ISPs randomly removing content and blocking websites without the backing of any legal orders.[167]
Use by terrorists
In September 2015, in response to a question about the use of Telegram by Islamic State of Iraq and the Levant (ISIS), Pavel Durov stated: "I think that privacy, ultimately, and our right for privacy is more important than our fear of bad things happening, like terrorism."[168] Durov sarcastically suggested to ban words because terrorists use them for communication.[169] ISIS recommended Telegram to its supporters and members[170][171][172] and in October 2015 they were able to double the number of followers of their official channel to 9,000.[173] In November 2015, Telegram announced that it had blocked 78 public channels operated by ISIS for spreading propaganda and mass communication.[174][175][176] Telegram stated that it would block public channels and bots that are related to terrorism, but it would not honor "politically-motivated censorship" based on "local restrictions on freedom of speech" and that it allowed "peaceful expression of alternative opinions."[177] Telegram's usage for ISIS propaganda reignited the encryption debate and encrypted messaging applications faced new scrutiny.[178][179] It also led to tabloids labeling Telegram as a "jihadi messaging app".[180]
In August 2016, French anti-terrorism investigators asserted that the two ISIS-directed terrorists who fatally cut the throat of a priest in Saint-Étienne-du-Rouvray in Normandy, France, and videoed the murder, had communicated via Telegram and "used the app to coordinate their plans for the attack". ISIS's media wing subsequently posted a video on Telegram, showing the pair pledging allegiance. A CNN news report stated that Telegram had "become known as a preferred means of communication for the terror group ISIS and was used by the ISIS cell that plotted the Paris terror attacks in November".[170]
In June 2017, the Russian communications regulator Roscomnadzor hinted at the possibility of blocking Telegram in Russia due to its usage by terrorists.[181]
In July 2017, Director General of Application and Informatics of the Indonesian Ministry of Communication and Informatics, Semuel Abrijani Pangerapan, said eleven Telegram DNS servers were blocked because many channels in the service "promoted radicalism, terrorism, hatred, bomb assembly, civil attack, disturbing images, and other propaganda contrary to Indonesian laws and regulations."[182] In August 2017, Indonesia lifted the block after countermeasures against negative content were deployed in association with Telegram LLP.[183]
In November 2019, Telegram participated in Europol's Internet Referral Action Day.[184] As a result, Telegram expanded and strengthened its terrorist content detection and removal efforts. Over 43,000 terrorist-related bots and channels were removed from Telegram. According to U.S. officials, the crackdown on Telegram was especially effective and seems to be having lasting impact.[185] According to Europol, Telegram has put forth considerable effort in removing abusers of its platform.[184]
White supremacists
An article published by Mother Jones magazine on January 19, 2020, says that the Anti-Defamation League has called Telegram a white supremacist "safe haven" and a valuable tool for right-wing extremists. The article said Neo-nazi and fascist hate groups were using the Telegram app to organize a gun rally in Richmond, Virginia, on January 20, 2020.[186] The neo-Nazi white separatist paramilitary hate group The Base switched over to Telegram after being blocked on most social media platforms, including Twitter, YouTube, and Gab, a favorite among extremists. After a number of arrests of The Base members in January 2020, a note appeared on its official Telegram account warning people to stop posting.[187] In August 2019 white supremacist Christopher Cantwell posted anti-Semitic comments on Telegram.[188]
The Anti-Defamation League notes that Telegram was founded by the same two Russian brothers who founded VKontakte (VK), which is known for its lack of moderation when it comes to white supremism. While Telegram's terms of service prohibit the promotion of violence, they have allowed violent videos posted by mass shooters Brenton Tarrant (Christchurch, New Zealand) and Stephan Balliet (Halle, Germany), although other social media platforms had removed them. The League also points to the RapeWaffen Division channel, which openly advocates rape and murder as part of a race war.[189]
Illegal uses
Telegram allows users to report abusive public domain posts and deletes terrorist groups' public chats and child pornography. But Telegram does not share or redress any abusing report. Telegram is still being actively used for illegal purposes. [190][191][192][193]
Telegram Open Network ICO
In December 2017, cryptocurrency blog Cointelegraph reported that Telegram was planning to launch a blockchain platform and native cryptocurrency. In January 2018, TechCrunch confirmed the news, referring to multiple sources.[194]
The company put together an Initial Coin Offering (ICO)[195] to fund development of a new blockchain platform, to be called the "Telegram Open Network" (TON). The offering was organised as a SAFT (Simple Agreement for Future Tokens), selling futures on tokens to be called GRAM.[194] A 23-page white paper[196] and a detailed 132-page technical paper[197] for the plan were released.
The offering ran in two rounds, each taking in $850 million. Russian tech news site calculated the first round as offering 2.25 billion tokens at $0.38 each, with a minimum purchase of $20 million, and the second as offering 640 million tokens at $1.33 each, with a minimum purchase of $1 million.[198][199][200]
As of April 2018, the firm had reported raising $1.7 billion through the ongoing ICO.[201] Company officials have not made any public statements regarding the ICO. As of spring 2018, the only official sources of information were the two Forms D that Telegram filed with the U.S. Securities and Exchange Commission.[202]
Only the pre-ICO rounds were conducted; the public ICO was cancelled.[203] The network has yet to be released.
On 11 October 2019, the U.S. Securities and Exchange Commission filed an emergency action and obtained a temporary restraining order against Telegram over an alleged unregistered and ongoing digital token offering in the U.S.[204]
Breach
An Elasticsearch database holding 42 million records 42 million user IDs and phone numbers were exposed online without a password. The accounts belong to users in Iran, which were extracted from an unofficial government sanctioned version of telegram; was found on March 30, 2020. It took 11 days for the database to be taken down, but the researchers say the data was accessed by other parties, including a hacker who reported the information to a specialized forum.[205][206][207]
See also
References
- ^ "Live Locations, Media Player and Languages". telegram.org. Telegram Messenger LLP. Retrieved 12 April 2018.
- ^ "Translating Telegram". translations.telegram.org. Telegram Messenger LLP. Retrieved 12 April 2018.
- ^ a b "List of Telegram applications". 6 February 2014.
- ^ "Telegram Company profile". 12 December 2019.
- ^ "Latest commits from official repository (Android version)". Github. 10 April 2016.
- ^ "Telegram F.A.Q." Telegram. Retrieved 1 October 2017.
- ^ a b "200,000,000 Monthly Active Users". Telegram. 22 March 2018.
- ^ "Telegram F.A.Q." Telegram. Retrieved 1 October 2017.
- ^ "Why you should stop reading Gizmodo right now". Telegraph. 21 June 2017. Retrieved 1 October 2017.
- ^ "FAQ for the Technically Inclined". core.telegram.org. Retrieved 1 October 2017.
- ^ a b Hakim, Danny (2 December 2014). "Once Celebrated in Russia, the Programmer Pavel Durov Chooses Exile". The New York Times. Retrieved 19 November 2015.
- ^ a b c Shu, Catherine (27 October 2013). "Meet Telegram, A Secure Messaging App From The Founders Of VK, Russia's Largest Social Network". TechCrunch. Retrieved 18 March 2016.
- ^ "Russia's Zuckerberg launches Telegram, a new instant messenger service". Reuters. 30 August 2013. Retrieved 18 March 2016.
- ^ Telegram F.A.Q, "...making profits will never be an end-goal for Telegram."
- ^ Why Telegram has become the hottest messaging app in the world, The Verge. Retrieved 25 February 2014. "Telegram operates as a non-profit organization, and doesn’t plan to charge for its services."
- ^ Dewey, Caitlin (23 November 2015). "The secret American origins of Telegram, the encrypted messaging app favored by the Islamic State". Washington Post. Retrieved 31 March 2018.
- ^ "Telegram - Android Apps on Google Play". play.google.com. Retrieved 19 November 2015.
- ^ "Telegram Messenger on the App Store". App Store. Retrieved 19 November 2015.
- ^ Thornhill, John (3 July 2015). "Lunch with the FT: Pavel Durov". Financial Times. Retrieved 19 November 2015.
- ^ a b Brandom, Russell (6 October 2014). "Surveillance drives South Koreans to encrypted messaging apps". The Verge. Retrieved 19 November 2015.
- ^ a b Turton, William (29 September 2017). "What isn't Telegram saying about its connections to the Kremlin?". The Outline. Retrieved 11 October 2017.
- ^ "Telegram app free-speech advocate no stranger to Apple-FBI woes". 23 February 2016 – via www.reuters.com.
- ^ a b "This $5 Billion Encrypted App Isn't for Sale at Any Price". Bloomberg. 12 December 2017. Retrieved 22 December 2017.
- ^ Telegram Hits 35M Monthly Users, 15M Daily With 8B Messages Received Over 30 Days, TechCrunch, 24 March 2014
- ^ Telegram Reaches 1 Billion Daily Messages, Telegram, 8 December 2014
- ^ Telegram Hits 2 Billion Messages Sent Daily, Telegram, 13 May 2015
- ^ Lomas, Natasha (21 September 2015). "Telegram Now Seeing 12BN Daily Messages, up From 1BN in February". Techcrunch. Retrieved 19 November 2015.
- ^ Burns, Matt (23 February 2016). "Encrypted Messaging App Telegram Hits 100M Monthly Active Users, 350k New Users Each Day". TechCrunch. Retrieved 23 February 2016.
- ^ Lomas, Natasha. "Telegram gets 3M new signups during Facebook apps' outage". TechCrunch. Retrieved 14 March 2019.
- ^ Shieber, Jonathan. "Update: Facebook, Instagram and Messenger were down for many users". TechCrunch. Retrieved 14 March 2019.
- ^ "SECURITIES AND EXCHANGE COMMISSION, ::Plaintiff, :19 Civ. 9439(PKC):-against -:ECF Case:TELEGRAM GROUPINC.andTON ISSUERINC.," (PDF). The US Securities and Exchange Commission. 11 October 2019.
{{cite web}}
: CS1 maint: url-status (link) - ^ a b Lopez, Miguel, Configurando Telegram en el iPhone, en la web y en el Mac [Configuring Telegram in the Apple iPhone, the Web and the Mac] (in Spanish), Applesfera, retrieved 4 December 2014
- ^ a b Munizaga, Jonathan (1 December 2014). "Telegram ya permite migrar conversaciones y contactos a una línea nueva" [Telegram already allows migrating conversations and contacts to a new line] (in Spanish). Wayerless. Archived from the original on 19 December 2014. Retrieved 2 December 2014.
- ^ a b Mateo, David G (1 December 2014). "Telegram ahora permite traspasar mensajes al cambiar de número" (in Spanish). TuExperto. Retrieved 2 December 2014.
- ^ "Secure Messaging App Telegram Adds Usernames And Snapchat-Like Hold-To-View For Media". Techcrunch. 23 October 2014. Retrieved 23 October 2014.
- ^ "Hiding Last Seen Time - Done Right". Retrieved 18 May 2017.
- ^ Kirk, Jeremy (15 January 2015). "How much trust can you put in Telegram messenger?". PC World. IDG. Retrieved 4 May 2016.
- ^ a b Rad, Alex (9 January 2015). "A 264 Attack On Telegram, And Why A Super Villain Doesn't Need It To Read Your Telegram Chats". alexrad.me (Blog). Archived from the original on 25 April 2016. Retrieved 4 May 2016.
- ^ a b c d e f Lokot, Tetyana (2 May 2016). "Is Telegram Really Safe for Activists Under Threat? These Two Russians Aren't So Sure". Advox. Global Voices. Retrieved 4 May 2016.
- ^ a b Menn, Joseph; Torbati, Yeganeh (2 August 2016). "Exclusive: Hackers accessed Telegram messaging accounts in Iran - researchers". Reuters. San Francisco/Washington: Thomson Reuters. Retrieved 3 August 2016.
- ^ Lipp, Sebastian; Hoppenstedt, Max (26 August 2016). "Exklusiv: Wie das BKA Telegram-Accounts von Terrorverdächtigen knackt". Motherboard (in German). Vice Media Inc. Retrieved 28 August 2016.
- ^ "Group chats on Telegram can now have up to 1,00,000 members. Admins can use advanced permissions and butler bots to keep the peace". 23 October 2017 – via Twitter.com.
- ^ Unsend Messages, Network Usage, and More, Telegram, 3 January 2017, retrieved 4 April 2017
- ^ a b c "How secure is Telegram?", FAQ, Telegram
- ^ "Telegram Privacy Policy". Telegram. Retrieved 17 January 2016.
- ^ Telegram Bot Platform, Telegram, 24 June 2015, retrieved 1 September 2015
- ^ "Payments for Bots". Telegram. Retrieved 12 February 2018.
- ^ Schellevis, Joost (23 July 2015). "Telegram-bots kunnen relatief ongemerkt meelezen in groepsgesprekken". Tweakers (in Dutch). Retrieved 25 October 2015.
- ^ Introducing Inline Bots, Telegram, 4 January 2016, retrieved 4 April 2017
- ^ "Channels: Broadcasting Done Right". Telegram. 22 September 2015. Retrieved 24 September 2019.
- ^ Lobao, Martim (22 September 2015). "Telegram v3.2 Brings Channels For Broadcasting Your Messages To The World". Android Police.
- ^ "Focused Privacy, Discussion Groups, Seamless Web Bots and More". Telegram. 31 May 2019. Retrieved 24 September 2019.
- ^ Hess, Megan (3 December 2019). "How to Follow Bloomberg on Telegram". Bloomberg. Retrieved 10 January 2020.
{{cite web}}
: CS1 maint: url-status (link) - ^ a b Ting, Deanna (10 January 2020). "How Bloomberg News is using Telegram". Digiday. Retrieved 10 January 2020.
- ^ Telegram Stickers, Telegram, 2 January 2015, retrieved 5 January 2016
- ^ Drafts, Picture-in-Picture, and More, Telegram, 14 June 2016, retrieved 4 April 2017
- ^ a b "FAQ for the Technically Inclined". Telegram. Retrieved 9 January 2016.
- ^ Description of MTProto Mobile Protocol, Telegram
- ^ Rottermanner et al. 2015, p. 2
- ^ Hamburger, Ellis (25 February 2014). "Why Telegram has become the hottest messaging app in the world". The Verge. Vox Media. Retrieved 17 March 2016.
- ^ a b Rottermanner et al. 2015, p. 6
- ^ Perfect Forward Secrecy, Telegram, 14 December 2014
- ^ "Github issue 871: missing secret chats". 2 July 2015. Retrieved 25 July 2017.
- ^ Franceschi-Bicchierai, Lorenzo (24 February 2015). "Encryption Fails: When to Freak Out and When to Chill". Motherboard. Vice Media. Retrieved 9 January 2016.
- ^ Voice Calls: Secure, Crystal-Clear, AI-Powered, Telegram, 30 March 2017, retrieved 3 April 2017
- ^ "Video Messages and Telescope". Telegram. Retrieved 5 March 2018.
- ^ "Live Locations, Media Player and Languages". Telegram. Retrieved 5 March 2018.
- ^ "Telegram Login for Websites". Telegram. Retrieved 12 February 2018.
- ^ "Telegram 4.8 arrives with Telegram Login and streaming". Neowin. Retrieved 12 February 2018.
- ^ "Introducing Telegram Passport". Telegram. Retrieved 4 August 2018.
- ^ "Telegram Passport stores your real-world IDs in the cloud". Engadget. Retrieved 4 August 2018.
- ^ Canellis, David (2 August 2018). "Telegram Passport is already drawing fire for not being secure enough". Hard Fork | The Next Web. Retrieved 4 August 2018.
- ^ "Telegram, el chat que compite con Whatsapp" [Telegram, the chat that competes with WhatsApp]. El País (in Spanish). UY. Retrieved 8 January 2016.
- ^ Rull, Antonio (2 February 2014). "Pavel Durov, creador de Telegram: "Ninguna aplicación es 100% segura"" [Pavel Durov, creator of Telegram: "No application is 100% safe"]. eldiario.es (in Spanish). Retrieved 12 February 2014.
- ^ a b c d e f "Telegram Apps". Telegram.org. Retrieved 9 January 2016.
- ^ DrKLO. "DrKLO/Telegram". GitHub. Retrieved 8 January 2016.
- ^ "Telegram-Anleitung: So benutzt man den Messenger" (in German). Newsslash.
- ^ "Telegram se actualiza con compatibilidad para Android Wear" [Telegram updated with Android Wear compatibility] (in Spanish). Sevilla: ABC. Retrieved 7 December 2014.
- ^ peter-iakovlev (18 November 2015). "peter-iakovlev/Telegram". GitHub. Retrieved 8 January 2016.
- ^ "Telegram se actualiza para la pantalla del iPad" [Telegram updates for the iPad screen] (in Spanish). Cnet.
- ^ cpy, Mujeeb (23 January 2018). "Telegram X for Android Released – What's New". IB Computing. IB Computing. Retrieved 23 January 2018.
- ^ "Telegram X: Progress through Competition". telegram.org. Telegram LLC.
- ^ a b c Igor Zhukov. "zhukov/webogram". GitHub. Retrieved 8 January 2016.
- ^ telegramdesktop. "telegramdesktop/tdesktop". GitHub. Retrieved 8 January 2016.
- ^ overtake (1 December 2015). "overtake/telegram". GitHub. Retrieved 8 January 2016.
- ^ a b vysheng. "vysheng/tg". GitHub. Retrieved 9 January 2016.
- ^ "Unigram Preview - Microsoft Store". Microsoft Store. Retrieved 20 April 2017.
- ^ "UnigramDev/Unigram". GitHub. Retrieved 20 April 2017.
- ^ "Telegram app". Launchpad.
- ^ "Telegram App in Launchpad".
- ^ "Telegram app". OpenRepos.
- ^ Aseman Land. "Cutegram". Aseman. Retrieved 8 January 2016.
- ^ "Unofficial, FOSS-friendly fork of the original Telegram client for Android: Telegram-FOSS-Team/Telegram-FOSS". 6 August 2019 – via GitHub.
- ^ "Unofficial, Telegram client for Emacs". 6 August 2019 – via GitHub.
- ^ Roble, Patricio (3 March 2014). "Can Telegram Beat WhatsApp with a Public API?". ProgrammableWeb.
- ^ King, Bertel (27 February 2015). "WhatsApp+ Developer Releases Telegram+ After Being Forced To Drop The First Project". AndroidPolice.
- ^ "WhatsApp+ Is Now Officially Dead After Receiving A Cease And Desist From The Real WhatsApp". Android Police. 21 January 2015.
- ^ "Socializer Messenger App Offers a New Approach to Messaging". 14 September 2015.
- ^ Carter, Eric (27 June 2015). "Telegram Launches Bot API and Platform". ProgrammableWeb.
- ^ Butcher, Mike (24 June 2015). "Telegram's New Platform Lets Developers Create Smart Message Bots With Multiple Uses". TechCrunch.
- ^ Ubpin, Bruce (23 February 2016). "Introducing The Forbes Newsbot on Telegram". Forbes.
- ^ Bernard, Travis (15 March 2016). "Check out the new AI-powered TechCrunch news bot on Telegram messenger". TechCrunch.
- ^ a b c d e "Why Telegram's security flaws may put Iran's journalists at risk". Committee to Protect Journalists. 31 May 2016. Retrieved 20 July 2016.
- ^ a b c d Turton, William (24 June 2016). "Why You Should Stop Using Telegram Right Now". Gizmodo. Gawker Media. Retrieved 7 July 2016.
- ^ Durov, Pavel (14 August 2017). "Why Isn't Telegram End-to-End Encrypted by Default?". Telegraph. Retrieved 1 October 2017.
- ^ a b Jakobsen & Orlandi 2015
- ^ a b Cox, Joseph (10 December 2015). "Why You Don't Roll Your Own Crypto". Motherboard. Vice Media. Retrieved 11 December 2015.
- ^ a b Turton, William (19 November 2015). "Cryptography expert casts doubt on encryption in ISIS' favorite messaging app". The Daily Dot. Retrieved 11 December 2015.
- ^ Sawers, Paul (30 June 2016). "Ahead of IPO, mobile messaging giant Line introduces end-to-end encryption by default". VentureBeat. Retrieved 10 September 2016.
- ^ "WhatsApp und Alternativen: Datenschutz im Test" [WhatsApp and alternatives: data protection tested]. Stiftung Warentest (in German). 26 February 2014. Retrieved 2 March 2016.
- ^ a b "Secure Messaging Scorecard". Electronic Frontier Foundation. 17 February 2015. Retrieved 20 July 2016.
- ^ Jakobsen & Orlandi 2015, p. 6
- ^ Jakobsen & Orlandi 2015, p. 1
- ^ "FAQ for the Technically Inclined: What about IND-CCA?". Telegram. Telegram. Retrieved 25 March 2017.
- ^ Clary, Grayson. "The Flaw in ISIS's Favorite Messaging App". The Atlantic. The Atlantic. Retrieved 25 March 2017.
- ^ "FAQ for the Technically Inclined". Telegram. Telegram. Retrieved 9 December 2017.
- ^ "Telegram founder: U.S. intelligence agencies tried to bribe us to weaken encryption". FastCo News. 15 June 2017. Retrieved 15 June 2017.
- ^ Leyden, John (14 June 2017). "Telegram chat app founder claims Feds offered backdoor bribe". The Register. Situation Publishing. Retrieved 15 June 2017.
- ^ هشدار تلگرام درباره ناامن بودن "هاتگرام" و "طلاگرام" (in Persian), retrieved 18 January 2019
- ^ "Telegram F.A.Q." web.archive.org. 9 March 2014. Archived from the original on 9 March 2014. Retrieved 21 January 2019.
- ^ "Telegram F.A.Q." web.archive.org. 14 January 2019. Archived from the original on 14 January 2019. Retrieved 21 January 2019.
- ^ "r/Telegram - I think it's time for Telegram to release its server-side source code". reddit. Retrieved 21 January 2019.
- ^ "Secret Brazil Archive — An Investigative Series by The Intercept". The Intercept. Retrieved 10 June 2019.
- ^ "Como hackers tiveram acesso a conversas privadas de Sergio Moro?". noticias.uol.com.br (in Brazilian Portuguese). Retrieved 10 June 2019.
- ^ @telegram (11 June 2019). "Indeed, there's no evidence of any hack. Most likely to have been either malware or someone not using a 2-step verification password" (Tweet) – via Twitter.
- ^ "Telegram founder links cyber attack to China". 13 June 2019. Retrieved 13 June 2019.
- ^ Brewster, Thomas. "Mystery Russian Telegram Hacks Intercept Secret Codes To Spy On Messages". Forbes. Retrieved 13 December 2019.
- ^ Inc, TV Rain (4 December 2019). "Group-IB: российские предприниматели пожаловались на взлом переписки в Telegram". tvrain.ru. Retrieved 13 December 2019.
{{cite web}}
:|last=
has generic name (help) - ^ "Winter Contest Ends". Telegram. 2 March 2014. Retrieved 24 October 2015.
- ^ "Crypto Contest Ends". Telegram. 11 February 2015. Retrieved 24 October 2015.
- ^ Marlinspike, Moxie (19 December 2013). "A Crypto Challenge for the Telegram Developers". Thought Crime. Archived from the original on 7 March 2014. Retrieved 2 March 2014.
- ^ Wauters, Robin (19 December 2013). "Cracking contest: first one who breaks Telegram gets $200,000 in bitcoins (but really, nobody wins)". Tech.eu. Retrieved 2 March 2014.
- ^ Hornby, Taylor (19 December 2013). "Telegram's Cryptanalysis Contest". Crypto Fails. Retrieved 24 October 2015.
- ^ "تلگرام فیلتر نشده است" (in Persian). Tehran: Tasnim News Agency. 11 May 2015. Retrieved 29 October 2015.
Though it is claimed by many that the Telegram is banned, but it is operating normally in Iran.
- ^ a b Alimardani, Mahsa (28 August 2015). "Is Telegram's Compliance with Iran Compromising the Digital Security of Its Users?". Global Voices Online. Retrieved 30 August 2015.
- ^ "Telegram FAQ". Telegram. Retrieved 14 September 2015.
- ^ Dillet, Romain. "Iran forces messaging apps to move data to Iranian servers". TechCrunch. Retrieved 31 May 2016.
- ^ "Iranian Judiciary Blocks Popular Telegram App's New Voice Call Service – Center for Human Rights in Iran". www.iranhumanrights.org. Retrieved 1 February 2018.
- ^ ""Telegram is shutting down a channel that called for violent protests against Iran's government"". 30 December 2017.
- ^ "Twitter conversation between Nariman Gharib and Pavel Durov". 31 December 2017.
- ^ ""Iran restricts social media and issues stern warning to protesters"". 31 December 2017.
- ^ "Iran Unblocks Widely Used Messaging App Telegram After Two Weeks – Center for Human Rights in Iran". www.iranhumanrights.org. Retrieved 16 January 2018.
- ^ "بروجردی: تلگرام به زودی فیلتر می شود". 31 March 2018. Retrieved 31 March 2018.
- ^ Staff, Al-Monitor (2 April 2018). "Is Iran ready to block Telegram?". Al-Monitor. Retrieved 6 April 2018.
- ^ Staff, Al-Monitor (3 April 2018). "Rouhani administration pushes back against Telegram blocking". Al-Monitor. Retrieved 6 April 2018.
- ^ "Iran Poised to Block Popular Telegram Messaging App But Lacks Feasible Alternative – Center for Human Rights in Iran". www.iranhumanrights.org. Retrieved 6 April 2018.
- ^ هشدار تلگرام درباره ناامن بودن "هاتگرام" و "طلاگرام" (in Persian), retrieved 14 June 2019
- ^ "Iran arrests prosecutor behind ban on popular messaging app". AP NEWS. 1 October 2019. Retrieved 2 October 2019.
- ^ "China blocks Telegram messenger, blamed for aiding human rights lawyers - Hong Kong Free Press HKFP". 13 July 2015. Retrieved 1 February 2018.
- ^ "Urgent Statement of HKISPA on Selective Blocking of Internet Services". hkispa.org.hk. 28 August 2019.
- ^ "Leading Bahraini ISPs are Blocking Telegram Traffic". Bahrain Watch. 28 June 2016. Retrieved 8 August 2017.
- ^ Boy Riza Utama (15 July 2017). "Tak Perlu Blokir Telegram, Pengamat Sarankan Cara Ini kepada Mekominfo".
- ^ "Telegram Setiap Hari Hapus 10 Grup Di Indonesia Terkait Konten Radikal dan Terorisme". 10 August 2017.
- ^ "Telegram, the Secure Alternative to Whatsapp, is Down in Pakistan". 24 October 2017. Retrieved 18 November 2017.
- ^ "Telegram Blocked in Pakistan!". 17 November 2017. Retrieved 18 November 2017.
- ^ Roth, Andrew (13 April 2018). "Moscow court bans Telegram messaging app". The Guardian. Retrieved 13 April 2018.
- ^ MacFarquhar, Neil (13 April 2018). "Russian Court Bans Telegram App After 18-Minute Hearing". The New York Times. Retrieved 13 April 2018.
- ^ "Russia's game of Telegram whack-a-mole grows to 19M blocked IPs, hitting Twitch, Spotify and more – TechCrunch". techcrunch.com. Retrieved 31 May 2018.
- ^ "Russia's Telegram ban is a big, convoluted mess". The Verge. Retrieved 18 April 2018.
- ^ Wilmoth, Josiah (17 April 2018). "Russia's Telegram Ban Is a Fiasco, and It's Rendering Millions of IP Addresses Inaccessible". Privacy Online News. Retrieved 19 April 2018.
- ^ "Russia asks Apple to remove Telegram from App Store after banning the encrypted messaging service". 9to5Mac. 17 April 2018. Retrieved 2 May 2018.
- ^ McInnes, Laura (17 April 2018). "Russian Government Told APKMirror to Remove Telegram". www.howtochatonline.net. Retrieved 2 May 2018.
- ^ "Roskomnadzor requires Apple to stop distributing the Telegram application in Russia and sending its push notifications". 28 March 2018.
- ^ ""Яндекс" удалил из поиска сайт Telegram". lenta.ru (in Russian). 27 December 2018.
- ^ "Reddit, Telegram among websites blocked in India: internet groups". Reuters India. Retrieved 31 March 2020.
- ^ "Not just porn, users reveal Airtel, Jio, others also banning Telegram, VPNs and proxy sites in India". India Today. Retrieved 31 March 2020.
- ^ "How India Censors The Web". The Centre for Internet and Society. Retrieved 31 March 2020.
- ^ Lomas, Natasha. "Telegram Now Seeing 12BN Daily Messages, Up From 1BN In February". TechCrunch. Retrieved 19 November 2015.
- ^ "Дуров о запрете на Telegram: предлагаю запретить слова, с помощью них общаются террористы". vesti.ru (in Russian).
- ^ a b Haddad, Margot; Hume, Tim. "Killers of French priest met 4 days before attack". cnn.com.
- ^ Zavolokyn, Gennady. "Павел Дуров прокомментировал для CNN историю с подготовкой теракта через Telegram". TJournal.ru (in Russian). Retrieved 20 October 2015.
- ^ Steve Ragan (16 November 2015). "After Paris, ISIS moves propaganda machine to Darknet". CSO Online.
- ^ "Isis Telegram channel doubles followers to 9,000 in less than 1 week". Yahoo News. 12 October 2015.
- ^ "Encrypted messaging app Telegram shuts down Islamic State propaganda channels". Telegraph.co.uk. Retrieved 19 November 2015.
- ^ "One app maker has shut down almost 80 secret channels used by ISIS to communicate". Business Insider. Retrieved 19 November 2015.
- ^ "Telegram founder knew Isis used the app to communicate before Paris attacks". The Independent. 20 November 2015. Retrieved 24 April 2017.
- ^ "Secretive messaging app used by IS takes down posts". CNBC. Retrieved 19 November 2015.
- ^ Sanger, David; Perlroth, Nicole (16 November 2015). "Encrypted Messaging Apps Face New Scrutiny Over Possible Role in Paris Attacks". The New York Times. Retrieved 19 November 2015.
- ^ Foges, Clare. "Why is Silicon Valley helping the tech-savvy jihadists?". The Telegraph. Retrieved 9 December 2015.
- ^ Campbell, Scott (26 July 2016). "ISIS warn London 'next to be attacked' as UK churches put on terror alert after French priest murder". Daily Mirror. Retrieved 15 December 2016.
Images threatening attacks in London and other major world capitals have been posted on jihadi messaging app Telegram
- ^ (in Russian) Martynov, Kirill. "Занять Телеграм". Novaya Gazeta. Retrieved 26 June 2017.
- ^ Widiartanto, Yoga Hastyadi (14 July 2017). "Ini Alasan Pemerintah Blokir Telegram" [This is the Reason Why the Government Blocks Telegram]. Kompas (in Indonesian). Retrieved 15 July 2017.
- ^ "Indonesian government lifts ban on messaging service Telegram". The Straits Times. SPH Digital News. 11 August 2017.
- ^ a b "Europol and Telegram take on terrorist propaganda online". Europol. Retrieved 5 December 2019.
- ^ "IS Struggles to Regain Social Media Footing After Europe Crackdown". Voice of America. Retrieved 5 December 2019.
- ^ Ahead of Richmond Rally, Apple and Google Are Letting Nazis Use This App to Coordinate By Ali Breland, Mother Jones, 19 Jan 2020
- ^ https://www.nytimes.com/2020/01/22/us/white-supremacy-the-base.html
- ^ https://slate.com/technology/2019/08/telegram-white-nationalists-el-paso-shooting-facebook.html
- ^ "Telegram: The Latest Safe Haven for White Supremacists". ADL.org. 2 December 2019. Retrieved 11 March 2020.
- ^ "Telegram app a safe haven for cyber criminals: Kerala police to HC". Financial Express.
- ^ "Indonesia to lift ban on Telegram message service over security". Reuters. 1 August 2017. Retrieved 1 December 2019.
- ^ "Telegram F.A.Q." Telegram. Retrieved 1 December 2019.
- ^ "ISIS Watch". Telegram. Retrieved 1 December 2019.
- ^ a b Butcher, Mike. "Telegram plans multi-billion dollar ICO for chat cryptocurrency". TechCrunch. Retrieved 12 January 2018.
- ^ Mix. "Here is the leaked white paper for the massive Telegram ICO". HardFork. Retrieved 6 April 2018.
- ^ "TON.pdf". Google Docs.
- ^ "TON Technology.pdf". Google Docs.
- ^ Korolev, Igor (2 April 2018). "Under what conditions will Telegram return to investors the collected $ 2.55 billion". CNews (in Russian). Retrieved 12 October 2018.
- ^ Hanly, Ken (1 April 2018). "Telegram messenger service raises $1.7 billion from cryptocoin". Digital Journal. Retrieved 12 October 2018.
- ^ Liptak, Andrew (1 April 2018). "Telegram has raised a total of $1.7 billion from its two pre-ICO sales". The Verge. Retrieved 12 October 2018.
- ^ Shen, Lucinda (31 March 2018). "Even as Bitcoin Languishes, Telegram Raises $1.7 Billion Ahead of Largest ICO Ever". Fortune. Retrieved 31 March 2018.
- ^ "Telegram Files New Form D with SEC Indicating $1.7 Billion will be Raised | Crowdfund Insider". Crowdfund Insider. 2 April 2018. Retrieved 6 April 2018.
- ^ Vigna, Paul (2 May 2018). "Telegram Messaging App Scraps Plans for Public Coin Offering". Wall Street Journal. Retrieved 11 November 2018.
- ^ "SEC Halts Alleged $1.7 Billion Unregistered Digital Token Offering | U.S. Securities and Exchange Commission". U.S. Securities and Exchange Commission. 11 October 2019. Retrieved 11 October 2019.
- ^ "Report: 42M Iranian "Telegram" User IDs & Phone Numbers Leaked Online". Comparitech. 30 March 2020. Retrieved 8 April 2020.
- ^ April 7, Silviu STAHIE on; 2020 (7 April 2020). "Elasticsearch Database with 42 Million Records of Iranian Citizen Found Exposed Online". Security Boulevard. Retrieved 8 April 2020.
{{cite web}}
:|last2=
has numeric name (help)CS1 maint: numeric names: authors list (link) - ^ STAHIE, Silviu (7 April 2020). "Elasticsearch Database with 42 Million Records of Iranian Citizen..." HOTforSecurity. Retrieved 8 April 2020.
Further reading
- Jakobsen, Jakob; Orlandi, Claudio (8 December 2015). "On the CCA (in)security of MTProto" (PDF). Cryptology ePrint Archive. International Association for Cryptologic Research (IACR). Retrieved 11 December 2015.
{{cite web}}
: CS1 maint: ref duplicates default (link) - Rottermanner, Christoph; Kieseberg, Peter; Huber, Markus; Schmiedecker, Martin; Schrittwieser, Sebastian (December 2015). Privacy and Data Protection in Smartphone Messengers (PDF). Proceedings of the 17th International Conference on Information Integration and Web-based Applications & Services (iiWAS2015). ACM International Conference Proceedings Series. ISBN 978-1-4503-3491-4. Retrieved 18 March 2016.
{{cite conference}}
: CS1 maint: ref duplicates default (link)
External links
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)