Active Directory Security

Microsoft Security Advisory for Kerberos Hardening on Domain Controllers (CVE-2026-20833)

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Microsoft has issued a critical advisory for IT administrators managing Windows Domain Controllers (DCs), targeting the mitigation of CVE-2026-20833, a Kerberos vulnerability that exposes legacy encryption protocols like RC4. This vulnerability allows attackers to request service tickets and potentially compromise service account credentials, particularly on DCs running older or extended support versions of Windows Server. … Read more

Best Practices for Securing Active Directory: A Comprehensive Guide

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Introduction to Active Directory Security When setting up Active Directory (AD), security must be a top priority. Every level of the system, from small details to large configurations, needs attention. This includes managing AD users, security groups, organizational units (OUs), group policies, user access rights, patching, firewalls, network security, and encryption protocols. In my experience, … Read more