Hackers step up use of Osama Bin Laden’s death by shoving malware into PCs when users fall for phony claims of photos and video. F-Secure warned users to steer clear of spam that included the “Fotos_Osama_Bin_Laden” archive attachment. The messages claim the file contains photos of Bin Laden after he was shot and killed by U.S. special forces. The shift to direct attacks follows Monday’s campaigns to push fake security software to Windows and Mac users.”]