Microsoft has been making hardening changes to several protocols over the last couple of years. These are being put in place to combat security vulnerabilities that were discovered recently. Earlier ...

Microsoft has fixed a known issue causing authentication problems when Credential Guard is enabled on systems using the Kerberos PKINIT pre-auth security protocol. According to Redmond, these ...

Microsoft has issued out-of-band (OOB) updates to address authentication failures on domain controllers that run all currently supported editions of Windows Server. According to the security advisory, ...

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 ...

The Kerberos authentication protocol is the default authentication protocol of Windows Server 2003. This section examines how the protocol works by breaking down the complexity of the protocol into ...