Authorities Shut Down 'Highly Sophisticated' Botnet

A U.S.-led international operation disrupted a crime ring that had infected hundreds of thousands of PCs around the globe with malicious software used for stealing banking credentials and cyber extortion, the Justice Department said. Authorities used technical and legal tactics to interrupt the so-called botnet's operations, shutting down the servers the cyber criminals used to control infected machines and causing those machines to "phone home" to servers controlled by law enforcement.