A malicious FakeAV / Ransomlock program has been discovered for Android: it claims to be "Norton Internet Security," even though NIS does not exist for Android.
Norton Mobile Security / Symantec Mobile Security will detect this imposter as:
Android.Scartibro http://www.symantec.com/security_response/writeup.jsp?docid=2014-080718-2038-99
Here's an excellent article that may be if interest:
How to Spot a Fake Android App http://community.norton.com/t5/Norton-Protection-Blog/How-to-Spot-a-Fake-Android-App/ba-p/1168963
Hope this helps!
Mick