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Nation-stateMar 25, 2026

Russian Hacker Sentenced to 2 Years for TA551 Botnet-Driven Ransomware Attacks

Russian national sentenced to 2 years prison for managing TA551 botnet ransomware attacks.

Summary

Ilya Angelov, a 40-year-old Russian national operating under aliases 'milan' and 'okart,' was sentenced to two years in prison and fined $100,000 for co-managing the TA551 cybercriminal group. TA551 operated a botnet infrastructure to conduct ransomware attacks against U.S. companies. The sentencing represents a significant U.S. law enforcement action against organized ransomware-as-a-service operations.

Indicators of Compromise

  • malware — TA551 Botnet

Entities

TA551 (threat_actor)Ilya Angelov (aliases: milan, okart) (threat_actor)