WASHINGTON, Feb. 15 -- The U.S. Department of Justice's Computer Crime & Intellectual Property Section issued the following press release:

A Ukrainian national pleaded guilty today to his role in two separate and wide-ranging malware schemes involving tens of millions of dollars in losses.

"Vyacheslav Igorevich Penchukov was a leader of two prolific malware groups that infected thousands of computers with malicious software. These criminal groups stole millions of dollars from their victims and even attacked a major hospital with ransomware, leaving it unable to provide critical care to patients for over two weeks," said Acting Assistant Attorney General Nicole M. Argentieri of the Justice Department's Criminal Division. "Before his arres...