Microsoft will write a software plug-in that allows the Firefox open-source Web browser to work with Microsoft\u2019s Cardspace identity management technology.The plug-in will be written at Microsoft\u2019s Open Source Software Lab and released eventually to the open-source community, said Hank Janssen, the lab\u2019s program manager, at the TechEd IT Forum in Barcelona on Wednesday."We\u2019re actually writing the CardSpace extension, and they [The Mozilla Foundation] were very, very excited about it,"\u00a0said Janssen.CardSpace, formerly called InfoCard, aims to make it easier for users to manage and control the personal information they give to websites. Microsoft is promoting it as a way to replace user names and passwords and provide a better defense against phishing and other types of online fraud.The technology, which will be included in Windows Vista, stores the personal information on a user\u2019s computer. Microsoft\u2019s first attempt at identity management, called Passport, didn\u2019t catch on, partly because Microsoft planned to store users\u2019 information on its own servers, which raised privacy concerns. The work with Firefox continues Microsoft\u2019s cooperative efforts with the Mozilla Foundation, the distributor of Firefox, that would have been unheard of until recently, Janssen said.A group of Firefox developers came to Microsoft last month to ask questions about how to improve the browser\u2019s performance in Windows, Janssen said. Jokes circulated on discussion boards that black helicopters were flying overhead and that Microsoft might try to abduct the team, Janssen said.Microsoft provided "unfettered" access to all the people they needed to talk to make Firefox work better with Vista, Janssen said. "They even talked to the IE people."The Mozilla team left intact after three days. As far as the black helicopters, "We\u2019re not that organized," Janssen said. "We would like to be, maybe."No timetable has been set for when the plug-in will be completed or how it will be distributed, Microsoft said.-Jeremy Kirk, IDG News Service (London Bureau)Related Link:\n\nMozilla-Funded Study: Firefox 2 Tops IE 7 in AntifraudThis article is posted on our Microsoft Informer page.\u00a0For more news on the Redmond, Wash.-based powerhouse, keep checking in.Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.