UEFIは従来のBIOSに変わるソフトウェアインターフェースの仕様で、OSが起動する前に改ざんされていないかどうかをチェックするセキュアブートというプロトコルが規定されています。サイバーセキュリティ企業・ESETの研究者が、ハッカーが「Windows 11の ...

Windows ...

Microsoft’s CA-2023 Secure Boot update broke PCs. Learn why UEFI firmware failed, how vendors reacted, and how to fix your boot issues.

Security researchers have disclosed a new Secure Boot bypass tracked as CVE-2025-3052 that can be used to turn off security on PCs and servers and install bootkit malware. The flaw affects nearly ...

A recently discovered ransomware strain called HybridPetya can bypass the UEFI Secure Boot feature to install a malicious application on the EFI System Partition. HybridPetya appears inspired by the ...

Windows users who don't always install the updates rolled out by Microsoft each month for Patch Tuesday will want to install the ones for June. That's because the latest round of patches fixes a flaw ...

Microsoft's 2011 Secure Boot certificates expire June 2026, leaving millions of Windows 10 PCs vulnerable to boot-level ...

Sometimes the features designed to keep our computers safe can put us most at risk thanks to a worrying security flaw that can be exploited by hackers in their attacks. As reported by BleepingComputer ...

I clearly recall all the hue and cry around Windows 11's compatibility when the iteration was first released in October 2021. At the time, a significant number of PCs were rendered ineligible for the ...