NTLM Relay Attack Prevention: A Checklist for Active Directory Security

TL;DR Active Directory environments face severe risks from an NTLM relay attack, which exploits the lack of mutual authentication in legacy protocols to intercept credentials and gain unauthorized network access. Organizations can mitigate these vulnerabilities by phasing out NTLM in favor of Kerberos, enforcing SMB signing, and implementing strict privilege management to prevent lateral movement […]