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Windows Live ID

From Wikipedia, the free encyclopedia

Windows Live ID
Windows Live ID logo
A screenshot of Windows Live ID Sign-in page
Windows Live ID Sign-in page
Developer: Microsoft
Use:
Website: http://login.live.com

Windows Live ID (originally named .NET Passport; briefly Microsoft Passport Network) is a "unified-login" service developed and provided by Microsoft that allows users to log in to many websites using one account. It was originally positioned as a single sign-on service for all web commerce.

Contents

[edit] Product overview

The old Microsoft Passport Network logo
The old Microsoft Passport Network logo

Many of these websites include Microsoft services such as Hotmail, MSNBC, all MSN services, Xbox 360's Xbox Live, the .NET Messenger Service or MSN subscriptions, but there are also several other companies affiliated with Microsoft that use it, such as Expedia and Hoyts. Users of Hotmail or MSN automatically have a Microsoft Passport that corresponds to their accounts. Most recently user log in data has started to allow demographic targeting by advertisers using Microsoft adCenter.

Microsoft's Windows XP currently has an option to link a Windows user account with a .NET Passport, logging users into Passport whenever they log into Windows.

Its relationship to Windows CardSpace, a component of Windows Vista is unknown at this time; Microsoft's own Chief Identity Architect, Kim Cameron, has questioned Passport in his Laws of Identity, many of which are violated by Passport.

[edit] Technical overview

A new user entering a commerce server will first be redirected to the nearest authentication server, which asks for username and password over an SSL-secured connection, unless the user can present a valid GLOBALAUTH-cookie. In return, a newly accepted user (a) has an encrypted time-limited GLOBALAUTH-cookie implanted on his computer and (b) receives a triple DES encrypted ID-tag that previously has been agreed upon, between the authentication and the commerce server. This ID-tag is then sent to the commerce server, upon which the commerce server plants an encrypted LOCALAUTH-cookie in the user’s computer, also time-limited. The presenting of these LOCAL and GLOBAL cookies to various commerce and authentication servers prevents the need for authentication within the time of validity, as in the Kerberos protocol.

If the user actively logs out of Passport (or Live ID), these cookies will be removed; however, users are often confused by other commerce server logout functions, and unintentionally leave these cookies intact. The service also depends on users allowing their browsers to ship cookies to servers other than the one they originated from.

Following recent updates to Windows XP, some users experience popups asking them to enter their Windows Live ID whenever they browse to their Documents_and_Settings/username/ folder, whether or not they have such an ID or use those services. This can be prevented by deleting the item "My web sites on MSN" from the NetHood subfolder in this folder, which apparently causes this by trying to access the network.

[edit] Digital Rights

Passport was criticized by the Electronic Frontier Foundation's staff attorney Deborah Pierce as a potential threat to privacy after it was revealed that Microsoft would have full access and usage to customer information.[1]The privacy terms were quickly updated by Microsoft to allay customers' fears.

Microsoft has recently stated they will stop usage of Passport for entities outside of its own operations. Despite media reports that Microsoft is phasing out the technology, Microsoft rolled out a major update to the Passport service in May 2005. During 2006, Microsoft began to roll out an even larger upgrade to the Passport services called "Windows Live ID". Windows Live ID will link all of Windows Live services like Windows Live Mail (Hotmail), Windows Live Messenger (MSN Messenger) and many more.

[edit] References

  1. ^ Privacy terms revised for Microsoft Passport

[edit] See also

[edit] External links


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