The various versions of Windows have used Kerberos as its main authentication protocol for over 20 years. However, in certain circumstances, the OS has to use another method, NTLM (NT LAN Manager).

Outlook seems to be working on all clients except for one which is a non domain joined Vista box (Outlook 2010) where autodiscover keeps changing the Proxy settings from negotiate back to NTLM which ...

Microsoft warns of credential-stealing NTLM relay attacks against Windows domain controllers Your email has been sent Microsoft is sounding an alert about a threat against Windows domain controllers ...

Microsoft's July 2017 Patch Tuesday includes a fix for an issue with the NT LAN Manager (NTLM) Authentication Protocol that can be exploited to allow attackers to create admin accounts on a local ...

Server: Fully-patched 2008 R2, running Certificate Services. The /certsrv virtual directory is using (I believe) default settings. Specifically, this means it's using Windows Authentication, with NTLM ...

A new zero-day vulnerability in NTLM discovered by researchers at 0patch allows attackers to steal NTLM credentials by having a user view a specially crafted malicious file in Windows Explorer — no ...

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 ...