Microsoft is disabling the NT LAN Manager (NTLM) protocol by default in Windows 11 and Windows Server to enhance security. Despite its long history, NTLM is outdated and vulnerable to attacks, prompting the shift towards more secure protocols like Kerberos. Many organizations still use NTLM, but the risks now outweigh the benefits.

Microsoft’s November 2025 Patch Tuesday updates resolved 63 vulnerabilities, including a critical zero-day in the Windows kernel actively under attack. The updates also addressed an Office vulnerability allowing unauthorized code execution. This month saw a significant decrease in reported flaws compared to October.

Microsoft's August 2025 Patch Tuesday addressed 107 vulnerabilities, including a critical zero-day in Windows Kerberos that could allow domain administrator privilege escalation. The update also fixed thirteen critical vulnerabilities, predominantly related to remote code execution and information disclosure, highlighting ongoing security challenges for Windows users.

The article discusses a recent research study that reveals vulnerabilities in Windows' Endpoint Privilege Management (EPM) system, which can be exploited by attackers to gain unauthorized access and escalate privileges. Researchers detail the methodologies used to uncover these security flaws and emphasize the need for improved protective measures within the Windows operating system.