CowboyRobot writes "Spyware is no longer the primary concern with unwanted software on mobile devices. According to mobile security firm Lookout, most mobile malware performs 'toll fraud' — billing victims using premium SMS services. The problem is very geographically-dependent, worst in areas with weak SMS regulation, particularly China, Ukraine, and Russia, where users are 10,000 times more likely to have malware on their phones than users in Japan, for example. Other risks include mobile ads surreptitiously uploading personal data, as well as apps that download other malware without users knowing. The full report is available."