The U.S. Department of Justice on Monday released new details about the multinational takedown of Avalanche, a multimillion-dollar malware and money-laundering network, following a four-year probe led by German police and prosecutors. Assistant Attorney General Leslie R. Caldwell, Acting U.S. Attorney Soo C. Song and Assistant Director Scott S. Smith of the FBI’s Cyber Division made the announcement in Pittsburgh. Prosecutors and investigators in 40 countries were involved in the probe, led by the Public Prosecutor’s office in Verden, Germany.