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 ...

Two implementations of the Kerberos authentication protocol received patches this week against a vulnerability that allowed a threat actor to bypass authentication procedures. The vulnerability was ...

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 ...

Microsoft will enforce stronger Kerberos encryption in April 2026, removing RC4 support and potentially impacting enterprise setups.

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Eight years after it was accused of attempting to subvert the Kerberos authentication protocol, Microsoft is now joining the consortium responsible for maintaining and extending the standard. The very ...

Account administration in a distributed UNIX/Linux environment can become complicated and messy if done by hand. Large sites use special tools to deal with this problem. In this article, I describe ...