Following recent third-party domain hijacks affecting the .gh, .sl, and .as country-code top-level domains (ccTLDs), Chrome immediately blocked unauthorized HTTPS certificates via CRLSets and worked with issuing Certification Authorities to revoke them. Using Certificate Transparency (CT) logs, Chrome also proactively identified and blocked certificates for other impacted organizations. While Chrome users are automatically protected without needing to take action, we strongly encourage domain owners to monitor CT logs across their entire domain portfolio and publish restrictive CAA records to safeguard their namespaces.