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 ...

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 confirms Kerberos and NTLM login failures in Windows 11 24H2, 25H2, and Server 2025 due to duplicate SIDs after ...

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 ...

Heres a quick question I'm having trouble finding a straight answer too in the RK or other sources, and I don't have time to model it in the test lab before our meeting (argument) next week.<P>If an ...

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 ...

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 ...

Yaron Kassner, CTO at Silverfort, discusses authentication-bypass bugs in Cisco ASA, F5 Big-IP, IBM QRadar and Palo Alto Networks PAN-OS. Authentication is the front gate to security systems, so if ...

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 ...