Android system was for a long time considered as a safe system which can't be infected by too many viruses. As it turns out, the truth is different. Check Point company released a report in which they describe new malware named Googlian. In their opinion more than a million devices is infected by this malware! Gooligan attacks Android system in 4 or 5 version.
Gooligan may appear on your phone by downloading an infected application or entering into a malicious link. Malware is able to get access to our Google Play account, and then it downloads and rates these downloaded applications for 5 stars. So let's be careful and check pages that we enter and apps which we download.