# BlackX UEFI Bootkit Bypasses Secure Boot on Systems Missing Revocations

Researchers have detailed a new UEFI bootkit called BlackX that can evade Secure Boot protections on Windows machines that are patched but lack updated certificate revocations. Because bootkits load before the operating system, they can persist undetected and undermine the trust chain that Secure Boot is meant to enforce. The finding highlights how gaps in revocation deployment leave even up-to-date systems exposed.

**Importance:** 3/5

## Sources

### Security
- [The Hacker News](https://thehackernews.com/2026/10/blackx-uefi-bootkit-bypasses-secure.html) — Sat, 24 Oct 2026 00:20:13 +0530