||The lead section of this article may need to be rewritten. (February 2014)|
|Type||Société à responsabilité limitée|
|Headquarters||Luxembourg City, Luxembourg
Redmond, United States
|Key people||Qi Lu (Executive Vice President, Application and Services Group, Microsoft)
Gurdeep Singh Pall (Corporate Vice President, Skype and Lync)
|Products||Skype, VoIP, IM, and video chat client for multiple platforms|
|Revenue||US$ 740 million (2009 est.)|
|Part of a series on|
Skype was acquired by United States-based Microsoft Corporation on 13 October 2011, and the Skype business and companies Skype Technologies S.A., Skype Software S.A., Skype Communications S.A., Skype Inc. and Skype Limited are now controlled by Microsoft as a part of its Applications and Services Group. The Skype Technologies group within Microsoft develops the Skype Service, Skype Applications / Clients and the Microsoft Lync Server and Microsoft Lync clients for businesses.
Skype was released as a simple computer-to-computer, or computer-to-telephone program. Support for paid services such as SkypeOut, SkypeIn, and voice mail allows the company to generate its revenue as well as making local and international telephone calls easier to perform via the user's computer, sometimes cheaper than other companies' rates for similar services.
eBay acquired Skype Technologies S.A. in September 2005 and in April 2009 announced plans to spin it off in a 2010 IPO. It was acquired by Silver Lake Partners in 2009. On May 2011, Microsoft agreed to purchase Skype for US$8.5 billion, and announced the company would be incorporated as a division of Microsoft called Microsoft Skype Division. Microsoft's acquisition of Skype got EU approval on 7 October 2011.
On July 11, 2013, Microsoft’s CEO Steve Ballmer announced a reorganization of Microsoft along functional lines and with four engineering groups each led by a senior leader. Microsoft’s new Applications and Services Group, led by Executive Vice President Qi Lu includes Skype along with Bing and Microsoft Office.
As of 2010, Skype was available in 27 languages and has 660 million worldwide users, an average of over 100 million active each month, and has faced challenges to its intellectual property and political concerns by governments wishing to control their telecommunications systems.
- 1 History
- 2 Legal issues
- 3 Other Intellectual property challenges
- 4 Political issues
- 5 See also
- 6 References
- 7 External links
Skype was founded in 2003 by Janus Friis from Denmark and Niklas Zennström from Sweden, having its headquarters in Luxembourg with offices in Tallinn, Tartu, Stockholm, London, Prague, Palo Alto and Redmond, Washington.
The Skype software was originally developed by Estonians Ahti Heinla, Priit Kasesalu and Jaan Tallinn, who together with Janus Friis and Niklas Zennström were also behind the peer-to-peer file sharing software Kazaa. In April 2003, Skype.com and Skype.net domain names were registered. In August 2003, the first public beta version was released.
One of the initial names for the project was "Sky peer-to-peer", which was then abbreviated to "Skyper". However, some of the domain names associated with "Skyper" were already taken. Dropping the final "r" left the current title "Skype", for which domain names were available.
In September 2005, SkypeOut was banned in China. In October of the same year, eBay purchased Skype for $2.6 billion. (In 2011, the Ars Technica estimated the purchase price at $3.1 billion, not $2.6 billion.) In December 2005, videotelephony was introduced.
In April 2006, the number of registered users reached 100 million. In October, Skype 2.0 for Mac was released, the first full release of Skype with video for Macintosh, and in December, Skype announced a new pricing structure, with connection fees for all SkypeOut calls. Skype 3.0 for Windows was released.
In 2006, a now-discontinued feature called "Skypecasting" was introduced. It allowed recordings of Skype voice over IP voice calls and teleconferences to be used as podcasts. Skypecasting remained in beta until it was discontinued. Skypecasts hosted public conference calls for up to 100 people at a time. Unlike ordinary Skype p2p conference calls, Skypecasts supported moderation features suitable for panel discussions, lectures, and town hall forums. Skype operated a directory of public Skypecasts. Skypecasts was discontinued from 1 September 2008.
Throughout 2007, updates (3.1, 3.2 and 3.5) added new features including Skype Find, Skype Prime, Send Money (which allowed users to send money via PayPal from one Skype user to another), video in mood, inclusion of video content in chat, call transfer to another person or a group, and auto-redial. Skype 188.8.131.52 (beta) for Mac OS X released adding availability of contacts in the Mac Address Book to the Skype contact list, auto redial, contact groups, public chat creation, and an in-window volume slider in the call window. During several days in August, Skype users were unable to connect to full Skype network in many countries because of a Skype system-wide crash which was the result of exceptional number of logins after a Windows patch reboot ("Patch Tuesday"). In November, there was controversy when it was announced that users allocated certain London 020 numbers (specifically those beginning '7870') would lose them, after negotiations with the provider of this batch of numbers broke down.
By early 2008, the tumultuous ownership relations between the founders and eBay had resulted in significant leadership churn, with a succession of Skype presidents including Niklas Zennström, Rajiv Dutta, Alex Kazim, Niklas Zennström (again), and Henry Gomez, all holding that title at various points between 2005 and 2007. The business had failed to meet certain earn-out targets, growth was decelerating, product development had slowed significantly, and in October 2007 eBay took a $1.4 billion 'impairment' on the value of Skype, admitting it had overpaid, and now valuing the company at about $2.7 billion.
In October 2008, analysis revealed TOM-skype — the Chinese version of Skype run by TOM Online — sends content of text messages and encryption keys to monitoring servers.
Two original founders depart and new CEO appointed
For the six months after the departure of Niklas and Janus, Michael van Swaaij led the company as Interim CEO, until the appointment of Josh Silverman in February 2008. Silverman was "widely viewed as bringing in stability to Skype after a tumultuous phase that followed the exit of the two Skype co-founders." Under Silverman's 2.5 year tenure, the company focused its product efforts around video calling, ubiquity (gaining high penetration on smartphones, PCs, TVs, and consumer-electronic devices), building tailored offerings for enterprise customers, and diversifying revenue through subscriptions, premium accounts and advertising.
In advancing this strategy, Skype released many new products, substantially revamping its flagship Windows software (3.8 ->4.0), and its Macintosh and Linux software; while introducing new software products for smartphones, and consumer electronics. In 2009, Skype 4.0 was released, featuring full-screen high-quality video calling. the Linux client was updated, and an iPhone application was launched which topped the charts with over 1M downloads in its first two days. Skype also announced the launch of its software for the Android platform. Rounding out its ubiquity push, in 2010 Skype announced deep integration of Skype software into the IP-connected TVs from Panasonic, Samsung and Sony.
During this period Skype also discontinued lesser-used services such as support for the "Skype Me" presence indicator, which meant that a user was interested in receiving Skype calls from a non-contact. Skype also discontinued its SkypeCast service without explanation and added internal monthly and daily usage caps on their SkypeOut subscriptions, which had been advertised as "unlimited". Skype also discontinued its "dragonfly" feature, a community-generated yellow-pages product, and other features which were deemed to be under-performing or a distraction to management. Many users and observers had commented on the high rate of dropped calls and the difficulty reconnecting dropped calls. Updates including versions for the Sony PSP hand-held gaming system, version 2.0 for Linux with support for video-conferencing.
As part of its efforts to diversify revenues, Skype launched in April 2008 Skype for SIP, a service aimed at business users. At that time around 35 per cent of Skype's users were business users. In targeted premium products to consumers, Skype launched new monthly premium subscriptions products in May 2010.
Marketing efforts were also re-vamped, with a particular focus on innovative partnerships with TV broadcasters to integrate Skype into their programming. The Oprah Winfrey Show began using Skype regularly to host video calls between Oprah and her viewers at home, culminating in a show dedicated exclusively to the wonders of Skype ("where the Skype are You", aired first in May 2009). Skype also became commonly used by network news stations around the world, as a cost-effective replacement for sending satellite trucks, and enabling fast response from citizen journalists. Skype was also integrated into scripted TV programming, such as Californication; and in the seventh season of the U.S. syndicated version of the British game show Who Wants To Be a Millionaire in a new Ask the Expert video chat lifeline.
These efforts led to dramatically accelerating growth of Skype's Connected Users and Paying Users in 2008 and 2009. By 2009 Skype was adding about 380,000 new users each day; and by 2010, Telegeography estimated that Skype accounted for 25 per cent of the world's international calling minutes. According to their research, the overall international calling market grew a tepid 5 to 6 per cent annually in 2010. "Skype, however, has seen a huge uptick in growth, particularly in the last two years."
eBay sells 70%
Building on the revitalization which had begun in 2008, eBay announced, in April 2009, plans to spin off Skype through an initial public offering in 2010.[clarification needed] In August, Joltid filed a motion with the U.S. Securities and Exchange Commission, seeking to terminate a licensing agreement with eBay which allows eBay (and therefore Skype) to use the peer-to-peer communications technology on which Skype is based. If successful, this may have caused a shutdown of Skype in its current form, and made an IPO challenging to execute. In September, eBay announced the sale of 65 per cent of Skype to a consortium of Index Ventures and Silver Lake Partners. Early in September, Skype shut down the Extras developer program. In November Skype settled the Joltid litigation and acquired all Skype technology in exchange for equity in the company and eBay completed the sale of 70% of Skype to a consortium comprising Silver Lake Partners, Joltid, CPPIB, and Andreessen Horowitz for approximately $2 billion, valuing the entire business at US$2.75 billion.
In January 2010, Josh Silverman was recognized for his accomplishments in revitalizing Skype by being named First Runner Up in the TechCrunch "Crunchies" award for "Best CEO", beaten only by Mark Pincus of Zynga. In May 2010, Skype 5.0 beta was released, with a capacity to support group video calls involving up to four participants. Also in May, Skype released an updated client for the Apple iPhone that allowed Skype calls to be made over a 3G network. Originally, a 3G call subscription plan was to be instituted in 2011, but Skype eventually dropped the plan.
In June 2010, following the rapid departure of Daniel Berg, the Chief Technology Officer, and then Chief Development Officer Madhu Yarlagadda, Mark Gillett, an operating executive at Silver Lake Partners, assumed the role of Chief Development Officer following a period of several months working closely with Joshua Silverman to drive the transformation of the business, and the acceleration of cross platform and mobile product delivery.
On 9 August 2010, Skype filed with the United States Securities and Exchange Commission (SEC) to raise up to US$100 million in an initial public offering. Sources reported that the company expected to raise at least US$1 billion.
In October 2010, Skype announced the appointment of Tony Bates as CEO; Bates was a senior VP at Cisco and was responsible for its multi-billion-dollar enterprise, commercial and small business division. On 14 October 2010, Skype 5.0 for Windows was released with a number of improvements and feature additions, including a Facebook tab to allow users to SMS, chat with, or call their Facebook friends via Skype from the News Feed. The "Search for Skype Users" option was omitted from this version.
On 14 January 2011, Skype acquired Qik, a mobile video-sharing platform. In March 2011, Skype named Jonathan Chadwick as its new Chief Financial Officer and confirmed that Mark Gillett would serve full-time as Chief Development and Operating Officer  following the departure of Chief Financial and Administrative Officer Adrian Dillon.
Acquisition by Microsoft
On 10 May 2011, Microsoft announced it had agreed to acquire Skype for $8.5 billion. This marked a 300% increase in value for the company in the three years since the eBay write-down in October 2007. This constitutes Microsoft's largest ever acquisition. It was announced that Skype will become a division within Microsoft, with Skype's former CEO Tony Bates —now its president —reporting to Microsoft CEO Steve Ballmer. The price Microsoft agreed to pay for the company is 32 times Skype's operating profits. According to the Financial Times this raises fears of a new tech bubble. Ars Technica and the BBC have questioned the value for Microsoft in the purchase.
In October 2012, one year after the closure of the Skype acquisition, the newly formed Skype Division took responsibility for Microsoft's other VoIP and Unified Communications product Microsoft Lync.
Palo Alto office
The Skype North American headquarters was opened in early 2013 after the design was completed by San Francisco architect firm Blitz. Located in Palo Alto, California, the space is designed to encourage interaction and spontaneity, while also introducing a sense of humor into the workplace. Fake lawn, cushions that look like boulders, open spaces, and high ceilings accommodate 250 employees in a 5,000 square metres (54,000 sq ft) building. The Palo Alto headquarters also houses a games room complete with a pool table and table football machine. The office's silver LEED Silver certification means that it received between 50 and 59 points for its environmentally friendly construction.
P2P licensing dispute lawsuit and IPO offering
In its 2008 Annual Report, eBay admitted to an on-going dispute between it and Joltid Ltd. over the licensing of its peer-to-peer "Global Index" technology in its application. It announced that it terminated a standstill agreement, allowing either company to sue. On 1 April 2009, eBay filed with a UK court to settle the legal dispute. A few days later, eBay announced the planning of a public stock offering in 2010 to spin off Skype as a separate, publicly owned company. Some media outlets characterized the proposed sale and ongoing provision of Skype as being under threat because of the concurrent dispute.
Both settled the simultaneous suits in November, resulting in Joltid's part-ownership of the newly formed Skype Limited. The final holding share were with Silver Lake reducing their share to 56%, Joltid entered at 14%, and eBay retained 30%.
Other Intellectual property challenges
StreamCast Networks filed a complaint in U.S. District Court in Los Angeles, alleging theft of its peer-to-peer technology and violation of the "Racketeer Influenced and Corrupt Organizations" statute. The complaint, titled; StreamCast Networks Inc v. Skype Technologies, S.A., was filed on 20 January 2006 in Federal Court in the Central District of California and assigned Case Number, 2:2006cv00391. The $4.1 billion lawsuit did not name Skype's parent company, eBay, when initially filed. Streamcast's lawsuit was subsequently amended on 22 May 2006 to include eBay and 21 other party defendants.
In its lawsuit, Streamcast sought a worldwide injunction on the sale and marketing of eBay's Skype Internet voice communication products, as well as billions of dollars in unspecified damages. The lawsuit was finally dismissed in a decision filed on 19 January 2007.
On 1 June 2006, Net2Phone (the Internet telephone unit of IDT Corp.) filed a lawsuit against eBay and Skype accusing the unit of infringing U.S. Patent 6,108,704, which was granted in 2000. The lawsuit was settled between the parties in 2010
Skype was one of many companies (others include AOL, Microsoft, Yahoo, Cisco) which cooperate with the Chinese government in implementing a system of Internet censorship in mainland China. Critics of such policies argue that it is wrong for companies to profit from censorship and restrictions on freedom of the press and freedom of speech. Human rights advocates such as Human Rights Watch and media groups such as Reporters Without Borders speculate that if companies stopped contributing to the authorities' censorship efforts, the government could be forced to change.
Niklas Zennström, then chief executive of Skype, told reporters that its joint venture partner in China was operated in compliance with domestic law. "TOM Online had implemented a text filter, which is what everyone else in that market is doing," said Mr Zennström. "Those are the regulations," he said. "I may like or not like the laws and regulations to operate businesses in the UK or Germany or the US, but if I do business there I choose to comply with those laws and regulations. I can try to lobby to change them, but I need to comply with them. China in that way is not different."
In September 2005, the French Ministry of Research, acting on advice from the General Secretariat of National Defence, issued an official disapproval of the use of Skype in public research and higher education; some services are interpreting this decision as an outright ban. The exact reasons for the decision were not given.
United States, CALEA 2006
In May 2006, the Federal Communications Commission (FCC) successfully applied the Communications Assistance for Law Enforcement Act to allow wiretapping on digital phone networks. Skype was not compliant with the Act, and stated that it does not plan to comply.
United States, Transparency and Prism 2013
Starting in November 2010, Skype has been participating in a U.S. Government spy program titled PRISM, allowing the National Security Agency (NSA) unfettered access to people's chats and video and audio communications. However, it was not until February 2011 that the company was formally served with a directive to comply, signed by the attorney general.
In March 2013, the company issued transparency reports. confirming long held beliefs that Skype responds to requests from governments. Microsoft's General Counsel wrote to the US Attorney General, outlining the company's concerns in July 2013 in a  blog from Brad Smith including a copy of the letter to the US attorney.
- "Qi Lu, Executive Vice President of Applications and Services Group".
- Skype Hits 521 Million Users And $185 Million In Quarterly Revenue
- Toor, Amar. "Microsoft finalizes acquisition of Skype, Tony Bates shares his thoughts (video)". Engadget. Retrieved 14 October 2011.
- "Terms of Service – Business." Skype. Retrieved 7 May 2011. "Skype: means Skype Technologies S.A. located at 23–29 Rives de Clausen, 2165 Luxembourg;"
- "eBay to Acquire Skype press release". Retrieved 20 June 2008.
- Fowler, Geoffrey (6 April 2009). "EBay to Unload Skype In IPO, Citing Poor Fit". The Wall Street Journal. Retrieved 12 January 2010.
- Stone, Brad (2 September 2009). "In a Sale, Skype Wins a Chance to Prosper". The New York Times. Retrieved 11 April 2011.
- "Microsoft to acquire Skype". 10 May 2011. Retrieved 10 May 2011.
- Dolor, Solon (22 July 2011). "Microsoft Skype Acquisition Expected To Conclude By October, No Rebranding Expected". Social Barrel. Retrieved 25 July 2011.
- "One Microsoft: Company realigns to enable innovation at greater speed, efficiency".
- Retrieved 10 May 2011
- "About Skype: What is Skype?". Retrieved 28 July 2010.
- Kase, Jaanus. "Skype is expanding engineering to Prague". Skype Blogs. Retrieved 5 December 2006.
- "Skype — A Baltic Success Story". credit-suisse.com. Retrieved 24 February 2008.
- "The World's Hottest VC?".
- "Origin of the name/word Skype". Archived from the original on 4 November 2005. Retrieved 13 August 2010.
- Jack McCarthy. "China bans Skype". InfoWorld. Retrieved 7 June 2011.
- "eBay Completes Acquisition of Skype". eBay. Retrieved 17 June 2006.
- "EBay Buys Skype for $2.6 Billion". PCWorld. 12 September 2005. Retrieved 11 May 2011.
- "A Microsoft purchase would not be the first time Skype has been bought out; after being started in 2003, it was bought by eBay in 2005 for $3.1 billion. eBay then sold the majority of its stake in 2009 to a private investment group for $1.2 billion less than it paid." http://arstechnica.com/microsoft/news/2011/05/wsj-microsoft-to-buy-skype-for-7bn-rest-of-world-for-real.ars
- "Skype Launches Next Generation Free Internet and Video Calling for Everyone". Skype. Retrieved 17 June 2006.
- "Skype to Announce Disruptive Pricing Strategy for SkypeOut". Retrieved 19 December 2006.
- "What is Skype?". Skype.com. Retrieved 31 March 2009.
- "Goodnight Skypecasts — Skype Blogs". Share.skype.com. August 2008. Retrieved 31 March 2009.
- Stone, Brad (17 August 2007). "Error in Skype’s Software Shuts Down Phone Service". NY Times. Retrieved 17 August 2007.
- Richards, Jonathan (20 August 2007). "Skype blames outage on user reboot". The Times (London). Retrieved 23 May 2010.
- "Skype faces 020 7870 cut-off". 22 November 2007. Archived from the original on 23 November 2007. Retrieved 26 February 2012.
- "ebays-skype-writedown". 2 October 2007. Retrieved 2 October 2007.
- ""Breaching Trust, An analysis of surveillance and security practices on China’s TOM-Skype platform", Information Warfare Monitor, 2 October 2008" (PDF). Retrieved 10 October 2010.
- "eBay Inc. Appoints New CEOs of Skype and Shopping.com". 25 February 2008. Retrieved 25 February 2008.
- "Ex-Skype CEO Josh Silverman Joins Greylock as EIR". 7 October 2010. Retrieved 7 October 2010.
- Last Updated: 2:39PM GMT 6 February 2009 (6 February 2009). "New Skype 4.0 software adds full-screen video calls". London: Telegraph.co.uk. Retrieved 31 March 2009.
- "Skype for iPhone tops 1M downloads in two days". 3 April 2009. Retrieved 3 April 2009.
- "Skype Launches on Android Platform and more than 100 Java-Enabled Mobile Phones". 8 January 2009. Retrieved 8 January 2009.
- "Get Skype on your TV". 5 January 2010. Retrieved 5 January 2010.
- Fowler, Geoffrey A. (23 March 2009). "Skype Targets Businesses to Ring Up New Revenue". The Wall Street Journal. Retrieved 23 March 2009
- "Skype to launch monthly subscriptions and group video chat". 5 May 2010. Retrieved 5 May 2010.
- Fowler, Geoffrey A. (21 May 2009). "Skype Gets the Oprah Treatment". The Wall Street Journal. Retrieved 21 May 2009.
- "Skype is a real live growth company". 9 August 2010. Retrieved 9 August 2010.
- "Skype Growing by 380,000 Users a Day". 10 February 2009. Retrieved 10 February 2009.
- "Report Finds Skype Now Accounts for About 25% of International Call Minutes". 6 January 2011. Retrieved 6 January 2011.
- "eBay Inc. Announces press release for Plan for 2010 Initial Public Offering of Skype". Retrieved 14 April 2009.
- "Skype in danger of being shut down".
- Antoine Bertout (11 September 2009). "Skype.com". Share.skype.com. Retrieved 10 October 2010.
- "We've settled with Joltid". 6 November 2009. Retrieved 14 May 2011.
- "eBay Inc. Completes Sale of Skype".
- "Congratulations Crunchies Winners!". 8 January 2010. Retrieved 8 January 2010.
- Horsey, Julian (22 July 2010). "Skype iPhone App Update: With Multitasking & Drops 3G Fee". Geeky Gadgets. Retrieved 5 August 2010.
- "Preliminary Prospectus dated 9 August 2010". EDGAR. U.S. Securities and Exchange Commission. 9 August 2010. Retrieved 16 October 2010.
- Savitz, Eric (4 October 2010). "Skype Names Cisco Systems Exec Tony Bates As New CEO". Barron's. Retrieved 16 October 2010.
- "Skype gets serious Facebook Integration upcoming IPO". Mashable.com. 14 October 2010. Retrieved 14 October 2010.
- "Search for Skype Users missing.. – Skype Community". Forum.skype.com. 10 January 2011. Retrieved 11 May 2011.
- "Skype Hires McAffee's Jonathan Chadwick and Silver Lake's Mark Gillett as it approaches IPO". bloomberg.com. 23 March 2011. Retrieved 11 October 2011.
- Swisher, Kara. "Microsoft to Announce Skype Acquisition Early Tomorrow Morning | Kara Swisher | BoomTown | AllThingsD". Kara.allthingsd.com. Retrieved 11 May 2011.
- Halliday, Josh (10 May 2011). "Microsoft confirms $8.5bn Skype deal". The Guardian (London). Retrieved 10 May 2011.
- Bass, Dina; MacMillan, Douglas; Galante, Joseph (10 May 2011). "Microsoft Agrees to Buy Skype for $8.5 Billion to Add Web Calls". Bloomberg. Retrieved 10 May 2011.
- "Skype price raises fears of new tech bubble". Financial Times. 10 May 2011. Retrieved 10 May 2011.
- "Microsoft confirms takeover of Skype". BBC. 10 May 2011. Retrieved 10 May 2011.
- "WSJ: Microsoft to buy Skype for $7bn. Rest of world: for real?". ArsTechnica. 10 May 2011. Retrieved 10 May 2011. Unknown parameter
- Donovan, Fred. "Microsoft Links Lync & Skype". fierceenterprisecommunications.com. Retrieved 11 December 2012.
- Andrey Talalaev (1 June 2013). "Skype office space in Palo Alto". BangkokStartup.com. BangkokStartup.com. Retrieved 10 January 2014.
- Rebecca Hiscott (10 January 2014). "Playful Work Environments". Mashable. Mashable. Retrieved 10 January 2014.
- Amy Schellenbaum (12 August 2013). "Come Picnic on the Fake Lawn at Skype's Palo Alto Offices". Curbed. Vox Media, Inc. Retrieved 10 January 2014.
- "ebay 2008 Annual Report". ebay, Inc. Retrieved 7 October 2010.
- Arthur, Charles (1 August 2009). "Skype under threat from eBay licence row". London: The Guardian. Retrieved 31 July 2009.
- Quinn, James (30 July 2009). "Legal dispute threatens eBay's flotation of Skype". London: The Telegraph. Retrieved 31 July 2009.
- "eBay Inc. Signs Definitive Agreement to Sell Skype in Deal Valuing Communications Business at $2.75 Billion". Business Wire. 1 September 2009. Retrieved 1 September 2009.
- Gimein, Mark (1 September 2009). "The Social Network That Wasn't: Skype’s new owners might make it the platform it always should have been". The Big Money.
- Fowler, Geoffrey A. (17 September 2009). "Skype Founders Balk at eBay Deal". Wall Street Journal. Retrieved 17 July 2010.[dead link]
- Lindsay, Alan (6 November 2009). "Skype settles lawsuit with founders". CompareBusinessProducts. Retrieved 17 November 2009.
- "STREAMCAST NETWORKS, INC., Plaintiff, vs. SKYPE TECHNOLOGIES, S.A., et. al., Defendants". Retrieved 8 September 2010.
- Pallavi Gogoi (6 June 2006). "Skype Under Attack". Business Week (McGraw Hill).
- "eBay, Skype, IDT, and Net2Phone Settle Lawsuits". Retrieved 8 September 2010.
- iTWire – Skype cops GPL violation conviction in German court
- GPL violation by Skype re-affirmed by court The H Open, 2008.
- "Skype uses peer-pressure defense to explain China text censorship". The Register. Retrieved 18 June 2006.
- "Skype says texts are censored by China". FT.com (Financial Times). 18 April 2006.
- Can Skype Keep Its Secrets?[dead link]
- How Microsoft handed the NSA access to encrypted messages | World news. The Guardian. Retrieved on 2013-09-04.
-  Microsoft 2012 Law Enforcement Requests Report
-  blog from Brad Smith including a copy of the letter to the US attorney