UEFI

Everything SecOps Signal has reported about UEFI: 2 stories, newest first. Part of our Malware & Ransomware coverage.

Cisco UCS servers face UEFI Secure Boot bypass enabling unauthorized code execution via memory writes

Cisco released updates for a high-severity flaw in UCS servers that allows memory writes to bypass UEFI Secure Boot checks and run unauthorized code.

Oct 13, 2026

Bootkits hide below the operating system, rendering standard antivirus software blind to their presence and activity during startup.

Oct 9, 2026