Researchers at Kapersky Lab explained that the "Trojan-MS.AndroidOS.FakeInst.ef" is active in over 66 countries. Users think it is an innocent application for watching porn videos, but once installed on the phone it can intercept incoming messages, delete them or even respond to them. It can even send text messages that cost you $2 each.

 

“The geographical spread of SMS Trojans has significantly widened in recent times,” Roman Unuchek, senior malware analyst at Kaspersky Lab, said. “By the beginning of 2014, users in 66 countries had encountered the Trojan AndroidOS.FakeInst.ef, including in North and South America, as well as Europe.”

 

It is believed the original form of this trojan originated in Russia. Fourteen versions have since been created, with each one more sophisticated than the last.

 

Fake Porn App is First SMS Trojan to Land on US Soil [Info-Security Magazine]