diff --git a/OPEN_THREADS.md b/OPEN_THREADS.md
index 39f2aa7..e839b4b 100644
--- a/OPEN_THREADS.md
+++ b/OPEN_THREADS.md
@@ -22,3 +22,4 @@ This file tracks items that are **active but unfinished**. Keep it short and cur
 
 ### Platform (cross-cutting)
 - Dev container provisioning spec + template + flow (Agent + API)
+- Backup server audit (verify backup targets, schedules, restore paths, and alerting)