Systems Security 21 May 2026

Microsoft Defender Zero-Days CVE-2026-41091 and CVE-2026-45498: What Health Care IT Should Verify This Week

Microsoft confirmed on May 20 that two Defender vulnerabilities are being actively exploited in the wild.

Systems Security Compliance 9 April 2026
Secure Boot Certificates Expire in June 2026 - Cut Through the Noise, Here Is What to Do

Three Microsoft certificates that anchor the Secure Boot chain of trust on every Windows device manufactured since 20

Systems Security 1 April 2026
Deploying Secure Boot 2023 Certificates with Active Directory and Configuration Manager - A Step-by-Step Walkthrough

The companion article Secure Boot Certificates Expire in June 2026 -

Systems Compliance Leadership 23 June 2021
Active Directory Security Hardening: Move Beyond Default Settings Before Attackers Do

Most health care organizations deployed Active Directory years ago, configured the basics, and moved on.

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