> In the letter, he gave the names of three KGB agents secretly working for the FBI: Boris Yuzhin, Valery Martynov, and Sergei Motorin ... Hanssen was recalled yet again to Washington, D.C., in 1987. He was tasked with studying all known and rumored penetrations of the FBI to find the man who had betrayed Martynov and Motorin; this meant, in effect, that he was charged with searching for himself.
Official security auditor of Bitcoin and Ethereum.