How GitHub gave every repository a durable owner

GitHub had over 11,000 unowned repositories causing real problems during secret scanning remediation. They solved this by using GitHub custom properties to enforce mandatory ownership, syncing existing service catalog data, auto-archiving unclaimed repos after 30 days, and tightening enforcement to one hour post-rollout. The result: 8,000 archived repos and 100% ownership coverage across all active repositories in under 45 days.