Microsoft Defender Mistakenly Flags DigiCert Root Certificates as Malware

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…The post Microsoft Defender Mistakenly Flags DigiCert Root Certificates as Malware appeared first on CISO Whisperer.