Default Strange Malware/Virus problem

My sister just mailed me this screenshot. She keeps having one of these pop up every hour or so.


What do you think this could be? How can I diagnose this issue?
Phone History: Nokia 6600 -> Sony Ericsson W850i -> Sony Ericsson W300i -> HTC Touch -> LG Optimus One -> Sony Ericsson W8 -> Nexus 4 (broken) -> Galaxy S3 -> Galaxy Note 2

Paranoid Android | NEAK