Charges against four people, including two Russian security officials, were filed by federal prosecutors on Wednesday. The men are being accused of compromising over half a billion Yahoo accounts, a hack that took place in 2014.

According to the Justice Department, Dmitry Dokuchaev and Igor Sushchin, said to be officers of the Russian Federal Security Service (FSB), hired two criminal hackers to access information that reportedly had intelligence value.

One of the defendants, Karim Baratov, was arrested in Canada. The other three defendants are located in Russia, which NPR notes has no extradition treaty with the U.S.

“The criminal conduct at issue, carried out and otherwise facilitated by officers from an FSB unit that serves as the FBI’s point of contact in Moscow on cybercrime matters, is beyond the pale,” said Mary B. McCord, the acting assistant attorney, in a statement.

It sounds like a movie

The hack in question was only just disclosed by Yahoo last year, although it took place in 2014. At the time, Yahoo claimed a state-sponsored actor was responsible, and it appears the company was right.

It’s unclear if the four men were also responsible for another hack that compromised over 1 billion Yahoo accounts in 2013.