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#3 The Record threat-intel May 19, 2026 at 16:36 UTC

Microsoft disrupts Fox Tempest malware-signing-as-a-service platform tied to ransomware gangs

AI Summary

Microsoft's legal action against Fox Tempest details a code-signing abuse platform that provided cybercriminals with tools to sign malicious code since May 2025, enabling ransomware distribution at scale. The service exploited Microsoft's own software verification infrastructure, allowing malware to bypass security controls. Security teams should audit signed software from unknown publishers and monitor for misuse of trusted signing certificates.

Relevance score: 88.0/100

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