# UEFI bootkit infected fully patched Windows machines. Is Microsoft to blame?

- Source: Ars Technica
- Published: 2026-11-03T16:03:13+00:00
- Category: Tech
- Original: https://arstechnica.com/security/2026/11/uefi-bootkit-infected-fully-patched-windows-machines-is-microsoft-to-blame/
- Canonical: https://groundlevelnews.com/story/uefi-bootkit-infected-fully-patched-windows-machines-is-microsoft-to-b-6e52bc/

UEFI bootkit BlackX exploits Microsoft's lack of clarity around Secure Boot protections.

_Ground Level News shows a short summary only; the full article and all rights belong to Ars Technica._