While Windows IT professionals deal with security on a daily basis, very few understand the under-the-hood protocol, Kerberos. Kerberos is a security protocol in Windows introduced in Windows 2000 to ...

Several readers responded to my previous post on pass-the-hash attacks, asking if Kerberos authentication versus LANManager, NTLM, or NTLMv2 was an effective defense. It’s a good question, one that I ...

Proof-of-concept exploit code has been published this week for a new attack technique that can bypass the Kerberos authentication protocol in Windows environments and let intruders access sensitive ...

The Kerberos authentication method originated at the Massachusetts Institute of Technology in the 1980s, as part of a project called Athena. The project involved integrating the computers on the MIT ...

Microsoft is investigating a new known issue causing enterprise domain controllers to experience Kerberos sign-in failures and other authentication problems after installing cumulative updates ...

Microsoft released Patch Tuesday updates for the month of April 2025 earlier today. On Windows 10, they were published under KB5055518, KB5055519, and KB5055521. On Windows 11, they were published ...

Microsoft is investigating a new known issue causing enterprise domain controllers to experience Kerberos authentication problems after installing security updates released to address CVE-2020-17049 ...

Microsoft is working on a fix for a bug in last week's patch for a bypass vulnerability in the Kerberos Key Distribution Center (KDC) security feature. Microsoft has flagged the issue affecting ...