The malware type eclipsed spyware this year as the largest application-based threat according to mobile security firm Lookout who found it made up 79 percent of the malware it detected over the past year. FakeInst, a type of toll fraud malware, has dominated mobile phones over the last six or seven months. Lookout posits copies of the SMS Trojan have earned the malware s authors approximately $10 million over the. last nine months, mostly from victims in Russia and Eastern Europe. For example, phones in Russia have a 42 percent chance of being infected with malware.
Source: https://threatpost.com/report-toll-fraud-emerges-android-s-number-one-threat-090712/76982/