Yahoo Messenger

“Y!M” redirects here. For the movie database, see Yahoo! Movies, for the mail service, see Yahoo! Mail.

Yahoo! Messenger

File:Yahoo! Messenger logo.png
Screenshot File:Yahoo! Messenger for vista .png Yahoo! Messenger Beta for Windows Vista displaying Contact List
Developer(s)	Yahoo!
Stable release	8.1.0.421 (Windows) / 2.5.3 (Mac)
Preview release	9.0.0.1389 (Windows) / 3.0b3 build 98855 (Mac) / 1.2.0.1029 (Windows Vista) / May 29, 2008/ March 25, 2008/ April 28, 2008
Operating system	Cross-platform
Type	VoIP/Instant messaging client
License	Proprietary adware
Website	messenger.yahoo.com

Yahoo! Messenger is a popular advertisement-supported instant messaging client and associated protocol provided by Yahoo!. Yahoo! Messenger is provided free of charge and can be downloaded and used with a generic "Yahoo! ID" which also allows access to other Yahoo! services, such as Yahoo! Mail, where users can be automatically notified when they receive new email. Yahoo! also offers PC-PC, PC-Phone and Phone-to-PC service, file transfers, webcam hosting, text messaging service, and chat rooms in various categories.

Yahoo! Messenger was originally launched under the name Yahoo! Pager on 1998-03-09.

In addition to instant messaging features similar to those offered by ICQ, it also offers (on Microsoft Windows) features such as: IMVironments (customizing the look of Instant Message windows, some of which include authorized themes of famous cartoons such as Garfield or Dilbert), address-book integration and Custom Status Messages. It was also the first major IM client to feature BUZZing and music-status. Another recently added feature is customized avatars.

Announcements

On December 5, 2007, Yahoo! Messenger announces the release of Yahoo Messenger for Windows Vista as a Beta Release. It includes transparent Glass Windows and a new skin and GUI for the Windows Sidebar and program. Also integrated new tabs for going between different chat windows.

On October 29, 2007, Yahoo! Messenger announced the release of Yahoo! Messenger 9 Beta. It features a new and improved interface, new emoticons (also hidden emotions), the integration with Flickr account and a new in-line media player which enables the user to view maps, photos and videos from sites like Yahoo! Video and YouTube right in the IM window.

Yahoo! has announced a partnership with Microsoft to join their instant messaging networks. This would make Yahoo! Messenger compatible with Microsoft's .NET Messenger Service. It also made Microsoft's Windows Live Messenger compatible with Yahoo!'s Network. This change has taken effect as of 2006-07-13 - Yahoo! Messenger has integrated instant messaging with Windows Live Messenger users, and is fully functional.

British Telecommunications' BT Communicator software is based on Yahoo! Messenger. BT Communicator was withdrawn on 2006-12-31.

Features

File:Yahoo! Messenger for vista .png

Yahoo! Messenger for Windows Vista showing Yahoo!'s calling feature.

Yahoo! Voice

Main article: Yahoo! Voice

Yahoo! Voice is a Voice over IP PC-PC, PC-Phone and Phone-to-PC service , provided by Yahoo! via its Yahoo! Messenger instant messaging application. It is also available for the Mac OS X platform .

Voicemail and file sharing

Yahoo! added voicemail and file sending capabilities to their client. File-sharing of sizes up to 1GB was added.

Plug-ins

As of 8.0, Yahoo! Messenger has added the ability for users to create plug-ins (via the use of the freely available Yahoo! Messenger Plug-in SDK), which are then hosted and showcased on the Yahoo! Plug-in gallery.

Yahoo! Mail integration

Yahoo! plans to integrate Yahoo! Mail Beta and Yahoo! Messenger. Conversations will be archived and stored in the same manner as emails. This allows users to search within their chat logs easily, and to have them centrally stored and accessible from any computer.

Chat

All versions of Yahoo! Messenger have included the ability to access Yahoo! Chat rooms.

On June 19 2005, with no advance warning, Yahoo! disabled users' ability to create their own chat rooms. The move came after KPRC-TV in Houston, Texas reported that many of the user-created rooms were geared toward pedophilia. Many regulars in these rooms used the rooms to set up meetings to have sex with children and trade lewd pictures. While it was thought this move came as a result of several advertisers pulling their ads from Yahoo!, a more likely cause was a $10 million lawsuit filed by watchdog groups of internet portals on behalf of a 12-year-old victim of molestation.

Yahoo! has since closed down the chat.yahoo.com site (which is now a redirect to a section of the Yahoo! Messenger page) because the great majority of chat users accessed it through Messenger. In August of 2007, it began requiring word verification in order to use Yahoo! Chat. Officially, this is to guard against spammers and automated bots, which had been a source of frustration for many chatters (This method has proved highly unsuccessful, as many rooms now have more bots than users). However, as this also logs users' IP addresses, this feature could presumably be used to monitor against the type of behavior that prevailed in the pedophilia-oriented rooms. The company claims to be still working on a way to allow users to create their own rooms while providing safeguards against abuse.

Web Messenger

Similar to MSN Web Messenger and AOL Instant Messenger's Aim Express and Quick Buddy, Yahoo! Messenger also has a web applet version that runs in a browser window to communicate with friends. Recently, it has switched from DHTML to Adobe Flash in coding.

URI scheme

Yahoo! Messenger's installation process automatically installs an extra URI scheme ("protocol") handler into some web browsers, so that URIs beginning "ymsgr:" can open a new Yahoo! Messenger window with specified parameters. This is similar in function to the mailto: URI scheme, which creates a new e-mail message using the system's default mail program. For instance, a web page might include a link like the following in its HTML source to open a window for sending a message to the YIM user notarealuser:

<a href="ymsgr:sendim?notarealuser">Send Message</a>

To specify a message body, the m parameter is used, so that the link location might look like this:

ymsgr:sendim?notarealuser&m=This+is+my+message

* ymsgr:sendim? Example: ymsgr:sendim?myid

   * ymsgr:addfriend? Example: ymsgr:addfriend?myid
   * ymsgr:sendfile? Example: ymsgr:sendfile?myid
   * ymsgr:call? Example: ymsgr:call?1-800-555-7654 
   * ymsgr:callPhone? Example: ymsgr:callPhone?1-800-555-7654
   * YMSGR:chat? <"opens chat room list" Note: bigblueball does not like ? at the end of a link!
   * ymsgr:im? <Opens "send an im window" Note: bigblueball does not like ? at the end of a link!
   * ymsgr:getimv?doodle
   * ymsgr:getimv?yfighter

Offline messaging

Offline messaging, a feature long offered by Yahoo!, allows online users to send messages to their contacts, even if said contacts are not signed in at the time. The sender's offline contacts will receive these messages when they next go online.

Interoperability

On October 13, 2005, Yahoo! and Microsoft announced plans to introduce interoperability between their two messengers, creating the second largest real time communications service userbase worldwide: 40 percent of all users (AIM currently holds 56 percent). The announcement comes after years of 3rd party interoperability success (most notably, Trillian, Pidgin) and criticisms that the major real time communications services were locking their networks. Microsoft has also had talks with AOL in an attempt to introduce further interoperability, but so far, AOL seems unwilling to participate.

Interoperability between Yahoo! and Windows Live Messenger was launched July 12, 2006. This allows, for Yahoo! and Windows Live Messenger users to chat to each other without the need to create an account on the other service, provided both contacts use the latest versions of the clients. For now, it's impossible to talk using the voice service among both messengers.

Games

There are various games and applications available that can be accessed via the conversation window by clicking the games icon and challenging your current contact.

Main process

The Windows version of Yahoo! Messenger previously used ypager.exe as the name of the instance of the client. It was changed to yahoomessenger.exe since the beta of version 7.5.0.

Malware

Yahoo! Messenger (along with other networks such as Windows Live Messenger and AOL Instant Messenger) is often used as a conduit or "vector" for delivering malicious software such as spyware, viruses, worms, and trojans to unsuspecting computer users. The three methods used by hackers to deliver malware over the IM vector are (1) sending a file transfer with a virus-infected file, (2) delivering a message with socially engineered content containing a web address (URL) containing active malicious code and (3) sending specially crafted messages exploiting security vulnerabilities in the client software. Viruses and worms with colorful names such as W32.Yalove or W32/Spybot-MQ have been identified as targeting users of the Yahoo! Messenger network over the past few years.

The threat of infection by these two methods is substantial and growing. The IM Security Center, a collaboration between security companies and corporations, has tracked attacks over IM since 2003 and shows well over 1000 distinct attacks over the public IM networks. The first half of 2007 saw an 84% increase in IM attacks over the first half of 2006. While IM-specific attacks remain a small percentage of overall virus and malware threats, the continued growth in usage of IM, along with the rapid adoption of IM in the workplace (See Instant Messaging) make IM an attractive vector for hackers, and both individuals and companies must take precautions to avoid infection.

The most common method of delivering a malicious payload is the use of social engineering to construct a message that appears to be coming from a contact on the recipient's contact list. A socially engineered message is one that is written in a friendly, informal manner, that could easily be mistaken as coming from a friend. The message usually will say something like "Click here to see pics of me from vacation!" or "Is this you?" with a web address -- known as a "poison URL" -- for the recipient to click. Upon clicking the web address, the recipient is connected to a website containing active content, which is immediately downloaded to the recipient's computer. In most cases, the payload contains an installer, a number of hidden files containing text, and code which causes the same socially engineered message with poison URL to be sent to every contact on the contact list. When the message is sent to all contacts, the cycle starts again, as each contact believes they are receiving a message from a trusted friend. In this manner, IM-borne malware is capable of propagating very rapidly through company and external networks.

Worms and viruses are discovered on a regular basis by security companies, particularly by the three companies with IM-specific security products, Akonix Systems, FaceTime Communications, and Symantec. According to IM security researchers at Akonix, the number of new threats identified each month is 30 to 35, with a high of 88 in October, 2006.

SPIM

Yahoo! Messenger users are subject to unsolicited messages (SPIM) and the problem remains unresolved. Blogs and websites addressing this issue are supportive of the chat environment, and writers genuinely want to continue using the service, yet express frustration about Yahoo's apparent failure to address spam and other related problems. User queries are met with forms and replies that Yahoo is "working to resolve the problem," yet there is no evident progress.

Upcoming releases

Yahoo! recently released a preview version of Yahoo! Messenger for Windows Vista. It has been designed to exploit the new design elements of Vista's Windows Presentation Foundation and entitles a whole new user interface and features. Currently it lacks some basic functions such as webcam support and Chat.

The Mac OS X client version 3.0 Beta 2 has been released: file transfers have been re-enabled as have group conferences.

The Windows client version 9.0 Beta has been released. It supports both Windows XP and Vista. It features an improved interface and several new features.

Latest releases

File:Yahoo Messenger for Mac.jpg

A screenshot of Yahoo! Messenger 3.0b1 for Mac OS X

• Windows - 9.0.0.1389 beta
• Windows Vista - 1.0 build 1.2.0.1029 beta
• Mac OS X - 3.0 beta 3 (build 98855) / March 25, 2008
  • Several third-party clients exist that can connect to the Yahoo! Messenger network, such as, Fire, Adium and Proteus. Adium can access the chat rooms, the others cannot - they are for instant messaging only.
• Unix - 1.0.4 / September 2003
  • The Unix version looks different from the Windows version.
  • Version 1.0.6.1 is available for Gentoo Linux (masked as ~x86).
  • Version 1.0.6 can be downloaded from the Unix Beta page: http://public.yahoo.com/~mmk/

Feature and release history

Windows

There are many versions between those listed here and prior to last version listed here. These are "major releases". See one of several sites listed in external links to find other, older versions of the product.

Oldest version for which customer care support is available: 8.0 (as of April 2, 2007)

Oldest version that can log in (has not reached end of life): 6.0 (as of April 2, 2008)

Version	Date published	Notes
1.0	March 9, 1998
3.0	August 17, 2000
3.5
4.0
4.1
5.0	~ November 2001
5.5	August 15, 2002
5.6
6.0	August 2004	Support for Windows 95 and Windows NT dropped.
6.1
7.0.0.426	August 8, 2005	Renamed to "Yahoo! Messenger with Voice" Drag-and-drop photo sharing Drag-and-drop file sharing PC-to-PC calling Voicemail Ringtones Yahoo! 360° integration Pop-up Contact Cards Spam Reporting New tabs New emoticons Archive updates LiveWords (Beta)
7.0.0.437	August 30, 2005
7.5
8.0.0.505	June 20, 2006	Plugins possible
8.0.0.508	July 13, 2006	Interoperability between Yahoo! and Windows Live Messenger contacts
8.0.0.701	August 10, 2006	The release date signifies the release of a beta version. This is not clearly documented on the Yahoo site.
8.0.0.716	September 15, 2006
8.1.0.195	October 24, 2006	Renamed to "Yahoo! Messenger" Ability to check for updates from the help menu
8.1.0.209	December 4, 2006	Patched an ActiveX Control Buffer Overflow
8.1.0.239	January 19, 2007	Improvements in voice quality and sign-in, fixes for minor bugs with Windows Vista
8.1.0.244	March 14, 2007
8.1.0.249	March 28, 2007	Patches a security flaw
8.1.0.401	June 8, 2007	Fixes a vulnerability with the Webcam ActiveX control
8.1.0.402	June 15, 2007	Fixes a buffer overflow in an ActiveX control
8.1.0.413	July 17, 2007
8.1.0.416	August 22, 2007	Changes to voice library for better Vista support. (Users can get voice in Windows Vista without using a proxy app anymore, provided they still install codec themselves) Fix to two Cam exploits
8.1.0.419	August 29, 2007	Two more security patches
8.1.0.421	September 6, 2007
9.0.0.797 Beta	October 29, 2007	New beta release of Yahoo! Messenger. It provides an improved user interface. Brand new skins and emoticons Flickr integration in the photo sharing feature New in-line media player New features for voice calls Unicode support for better international messaging.
9.0.0.907 Beta	November 7, 2007	Fixed issues with Windows Vista installation problem Message formatting in the IM window Compact list view enabled
9.0.0.922 Beta	December 18, 2007
9.0.0.1389 Beta	May 29, 2008	Bigger emoticons Games are back! Status message improvements New contact list format button Import Contacts - new & improved Voice in chat rooms for Vista users & faster Captcha process Yahoo! Updates

Mac

• 2.5.3 - September 24, 2003
  • Chat
  • Webcam
  • Conference chat
• 3.0 beta 1 (build 17006) - June 28, 2006
  • New UI
  • Display Images
  • Avatars Support
  • Stealth Settings
  • Interoperability between Yahoo! and Windows Live Messenger contacts
  • YMSG14
• Prior Releases - Undocumented
• 3.0 beta 1 revision 2 (build 18274) - July 13, 2006
  • Auto Reconnect
  • YMSG14 related bug fixes.
• 3.0 beta 2 (build 65474) - September 06, 2007
  • Tabbed IM windows
  • Chat rooms
  • Improved stability for webcam and file transfer
  • More emoticons
  • Message archiving
  • YMSG15
  • No voice calling
  • Fixed scrolling up issue when Safari 3/Webkit 522+ is installed.
• 3.0 beta 2 revision 2 (build 75170) - October 25, 2007
  • Improved stability and compatibility with Mac OS X Version 10.5 (Leopard)
  • Some small interface improvements, including a new Show/Hide Display Images button in the IM and chat room windows
  • Improved chat room layout, with the list of chatters in a left hand, scrollable panel with age/sex/location details available on hover (if the user is sharing his/her profile)
  • Contextual (right click) menu's added to chatroom adding support for finally viewing a persons cam who isn't on contact list who's in the room.
• 3.0 beta 2 revision 3 (build 78326) - November 21, 2007
  • Improved stability and compatibility with Mac OS X Version 10.5 (Leopard)
  • Crash Reporter now works under Leopard.
  • Improvements to the sign in process when behind a firewall.
  • Couple of crash bugs fixed.
• 3.0 beta 3 (build 98855) - March 25, 2008

Compatible software

• Digsby
• Adium
• BitlBee
• Centericq
• Fire
• imeem
• IMVU
• Gyachi

• MECA Messenger
• meebo
• Meetro
• Miranda IM
• Paltalk
• Pidgin (formerly Gaim)
• Proteus
• YahELite

• Qnext
• SIM
• Trillian
• Trillian Pro
• Trillian Astra
• Windows Live Messenger
• Kopete
• Tiny Instant Messenger (TIM)

See also

• Comparison of instant messaging clients
• Comparison of instant messaging protocols
• Comparison of IRC clients
• Instant Messaging

External links

• Yahoo! Messenger
• Yahoo! Messenger - Official Blog
• Review for Yahoo Web Messenger
• Yahoo Messenger for Vista