Recently, I got frequently a message from TouchPal saying it uses my GPS, and asks if to shut it down. I had another problem, which it started getting stack, but deleting its data, and basically restating it helped.

The Security app, which a few days ago announced me there's an update, recognizes it as a threat. Another thing, there's ads on the app. I don't enter it fequently, so I don't remember if there were any ads there, but a friend who also has a Meizu phone told me he doesn't has these problems. I don't know if an update was actually made, there was no indication that it does anything. And this app is not a part of any appstore (not Google Play and not Meizu's store), so I can't verify it.

What is wrong here? And what to do about it?