The Justice Department says it's the agency's largest recovery of stolen cryptocurrency to date.

With the takedown of the Sky Fraud forum and other cybercrime sites, Russia is continuing a sweep that began earlier this year against groups known as REvil and Infraud Organization.

Tal Prihar helped to hide more than $8 million in cryptocurrency that dark web market operators paid DeepDotWeb for linking internet users to their wares, prosecutors said.

Prosecutors said Slava Dmitriev used the handle “GoldenAce” to buy and sell stolen identities on AlphaBay, and also assisted the Dark Overlord in extortion operations.

The operation — with help from Palo Alto Networks' Unit 42 as well as cybersecurity firm Group-IB — marks the second action against the group.

The security service said it executed the sting at locations in Moscow, St. Petersburg and elsewhere.