DigiCert Root Certificates Incorrectly Detected as Malware by Microsoft Defender

On May 3, 2026, system administrators and everyday users worldwide experienced a sudden, massive spike in severe security alerts from Microsoft Defender. The native Windows security platform began aggressively flagging system files as “Trojan:Win32/Cerdigent.A!dha.” This unexpected detection caused widespread panic…

Pipelock: Open-source AI agent firewall

AI coding agents run with shell access, environment variables containing API keys, and unrestricted internet connectivity, creating a single point of failure where one compromised tool call can leak credentials to an attacker-controlled domain. Pipelock, an open-source security harness developed…