Security firm Enigma Software reports 60 percent drop in fake antivirus detections this summer. Drop attributed to FBI’s Operation Trident Tribunal campaign against fake AV operations. Free antivirus programs such as Microsoft’s Security Essentials are now sophisticated enough to detect the biggest scam programs. Growing popularity of free antivirus software could also be a factor in the decline in fake AVs, especially in Mac OSOS and Windows users, as well as the threat posed by criminals impersonating the UK’s Metropolitan Police.”]