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Analysis · May 20, 2026 · Colten Anderson

The same crew beat the same defense twice in three months. The patch was the problem.

CVE-2023-24880 let Magniber ransomware bypass SmartScreen with malformed MSI signatures. It worked because Microsoft's earlier fix for nearly the same bug addressed one symptom and left the root cause standing. Narrow patches invite variants, and the attacker just comes back.