Macs are being deliberately targeted by a Russian hacking group, says Sophos security researcher Dmitry Samosseiko. The group is a subset of a larger criminal network known as the Partnerka, which normally turns a profit through spam promoting fake online drug vendors, and malware in the form of "scareware" anti-virus protection. The Partnerka have generally concentrated malware efforts on Windows users, who together represent the largest possible target.