Prosecutors said Monday that Evgenii Ptitsyn, 42, was recently extradited from South Korea to appear in a Maryland federal court on November 4. Ptitsyn is accused of administering the sale, distribution, and operation of Phobos, a type of ransomware operation that was used by cybercriminals to launch cyberattacks and extort at least $16 million from over a thousand public and private victims globally.