// #identity-security
5 articles
Hardening Active Directory Against CVE-2026-47288 and the Kerberos Attack Surface
CVE-2026-47288 in the Windows Kerberos KDC is the most critical Active Directory vulnerability of 2026. Beyond patching, the Kerberos attack surface encompasses golden ticket attacks, AS-REP roasting, Kerberoasting, and credential relay. This article provides post-patch hardening guidance for enterprise AD environments.
DBIR 2026 Identity Chapter: Credential Theft Remains Dominant, MFA Bypass Techniques Accelerating
The identity and credential findings from Verizon's 2026 DBIR show that stolen credentials remain the most common enabler of breaches across all sectors, used in 44% of analysed incidents. More troubling: the DBIR documents a significant increase in MFA bypass techniques — adversary-in-the-middle phishing toolkits, SIM swapping, and push notification fatigue attacks that defeat MFA as commonly deployed.
Healthcare Ransomware and Identity: The IAM Controls That Limit Gentelman's Blast Radius
The Gentelman ransomware group gains initial access through RMM vulnerabilities, but its ability to encrypt an entire healthcare network depends on how identity and access management is configured. Strong IAM controls — privileged access segmentation, MFA enforcement on administrative accounts, and service account restrictions — significantly limit what a ransomware operator can encrypt once inside the perimeter.
Implementing the Active Directory Tier Model: A Practical Guide for Post-Netlogon Environments
Microsoft's Active Directory Tier Model separates administrative access by privilege level to prevent credential theft from cascading into full domain compromise. CVE-2026-41089's impact in poorly segmented environments makes the Tier Model the single highest-leverage post-incident investment. This guide covers the implementation sequence for organisations starting from scratch.
Domain Controller Hardening After Netlogon CVE-2026-41089: Reducing the Attack Surface Beyond Patching
Patching CVE-2026-41089 closes the specific vulnerability, but domain controllers remain highly targeted infrastructure. This guide covers the access control, network segmentation, and monitoring controls that reduce DC attack surface against the class of unauthenticated RCE threats that Netlogon represents.