Feds arrest Romanian duo selling FUD malware crypters: CyberSeal, DataProtector

Law enforcement agencies including the U.S. FBI, Romanian Police (Poliția Română, the Australian Federal Police (AFP), the Norwegian National Criminal Investigation Service (Kripos), and Europol were involved in the operation.

The malware "protectors" and testing services helped malware authors make their samples fully undetectable (FUD) to leading antivirus products.