Microsoft is taking a major step to harden the Windows operating system against kernel-level threats by removing trust for drivers signed by the deprecated cross-signed root program. Starting with the April 2026 update, Windows 11 and Windows Server 2025 will block these untrusted drivers by default. This policy ensures that only drivers certified through the […] The post Windows 11 and Server 2025 Update to Block Untrusted Cross-Signed Kernel Drivers by Default appeared first on Cyber Security News.