What happened A faulty Microsoft Defender antimalware signature update released around April 30, 2026, caused widespread false positive alerts by incorrectly flagging two legitimate DigiCert root certificates as high-severity malware. The detection, labeled Trojan:Win32/Cerdigent.A!dha, identified registry entries belonging to DigiCert Assured ID Root CA and DigiCert Trusted Root G4 as threats and automatically quarantined them […]

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Evan Rowe

Source: Security Boulevard
Source Link: https://securityboulevard.com/2026/05/microsoft-defender-mistakenly-flags-digicert-root-certificates-as-malware/