January 07, 2005
Microsoft Releases Free Beta Antispyware Software
Microsoft Windows AntiSpyware (Beta): Overview, includes a link to download.
Related news: From CNN, Microsoft offers free security program, and from PCWorld, Microsoft Sends Shivers Through Antivirus Market - "Release of anti-spyware tool, promise of virus removal software could spell trouble for antivirus software companies."
Update: January 13, 2005, Free Microsoft Program To Battle Spyware Has Some Serious Flaws, by Walter S. Mossberg.