#Certificate Authority
Let’s Encrypt Halts All Certificate Issuance After Cross-Signed Root Certificate Incident
Let's Encrypt temporarily suspended all certificate issuance on May 8, 2026, after engineers identified a critical issue with a cross-signed certificate linking its Generation X root to its...
Microsoft Defender False Positive Quarantines DigiCert Root Certificates, Risks Breaking SSL Across Enterprise Networks
A faulty Microsoft Defender antimalware definition update incorrectly flagged two legitimate DigiCert root certificates as malware, automatically quarantining them from the Windows trust store on enterprise endpoints. The...