There was no rule covering backups at all: a failed nightly job would have gone unnoticed, which is precisely the silent failure management #0030 is about. BackupJobFailed catches a failed run, BackupNotRunning catches a CronJob that stopped scheduling, and RestoreDrillStale fires when the monthly drill stops — an unverified backup is an assumption again, so the absence of the check is itself worth alerting on. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>