In Q2 2012, the number of Trojans targeting the Android platform nearly tripled from the first quarter of the year. Mobile malware is becoming more complex: malicious users have been working hard to come up with new code obfuscation and protection, which complicates the threat analysis process. The development of mobile threats has led to the development of a black market for malware distribution, just as with threats targeting Windows. The main channels of distribution are unofficial online app stores and affiliate programs, such as affiliate programs.”]
Source: https://securelist.com/it-threat-evolution-q2-2012/36623/