Three security researchers in Germany have reportedly broken Microsoft's CardSpace, which was designed to beef up the security of users' personal information while browsing the internet.

Microsoft has refuted the claim by PC Tools that Windows 2000 is less susceptible to malware than Vista.

A vendor of anti-spyware and anti-virus software has released a report saying that Windows Vista, the latest version of Microsoft's latest operating system, is more susceptible to malware than the company's Windows 2000.

Microsoft is warning of a new vulnerability in Windows that could permit privilege escalation.

Microsoft on Thursday announced it will to push out eight fixes next week, including five for flaws graded critical, as part of its monthly patch cycle.

Microsoft said on Thursday that next week it will release four patches, all of them critical, with one apparently fixing a zero-day Excel vulnerability.

Time will tell if Microsoft's long-awaited release of the Vista service pack will spur widespread adoption of the operating system.

In the wake of a Princeton research team's surprising announcement of a simple method for stealing encrypted data from DRAM chips on PCs -- even after the unit's power has been shut off -- security experts told SCMagazineUS.com on Friday that the tools to thwart these thefts already are available.

Microsoft on Tuesday released 11 patches fixing 17 vulnerabilities - six of them "critical" - but failed to patch an exploited flaw in Microsoft Excel revealed last month.

After a brief hiatus, new variants have appeared in the wild of Trojan.Mebroot, a rogue rootkit discovered in December attacking the Windows Master Boot Record (MBR), Symantec has warned.