Knostic found 1,862 MCP servers exposed with zero authentication. Here are five actions CISOs should take now.

Update 5/20: Microsoft now considers these authentication problems to be resolved, having released “out-of-band” updates on May 19, as described here. Microsoft this week acknowledged possible ...

Microsoft on Thursday declared that authentication problems associated with its May monthly updates have been resolved via newly released updates. That notion comes in a May 19 update to a public ...

January patch trips up Azure Virtual Desktop and Windows 365 authentication Microsoft has kicked off 2026 with another faulty ...

U.S. cybersecurity agency CISA is warning about two critical vulnerabilities that allow authentication bypass and remote code execution in Optigo Networks ONS-S8 Aggregation Switch products used in ...

It appears many Mail users are having authentication problems in which they are prompted for the username and password every time a message is sent (either manually ...

Microsoft says the April 2025 security updates are causing authentication issues on some Windows Server 2025 domain controllers. The list of impacted platforms includes Windows Server 2016, Windows ...

Authentication issues in Windows Server after April updates Logon failures for WHfB and Device Public Key Authentication Workaround available, Microsoft working on permanent fix for impacted Windows ...

A number of distinct developments brought about the current authentication schemes we see in networks today.In the '70s, the creators of UNIX recognized that in order to give a number of individuals ...

Following two weeks of extreme chaos at Twitter, users are joining and fleeing the site in droves. More quietly, many are likely scrutinizing their accounts, checking their security settings, and ...