NP. Is there anything to look for in past MMS's that could be indicative of an attack? Would it always be an unknown user with a video attachment? Or could t

NP. Is there anything to look for in past MMS's that could be indicative of an attack? Would it always be an unknown user with a video attachment? Or could they spoof a known user? Since it has been in the wild for a while, I'm now wondering what I can do to look for symptoms of an infection.