> a media player doesn't (or shouldn't at least) modify any of my essential data Ask the Android team about the stagefright exploit. Media players provide a h

> a media player doesn't (or shouldn't at least) modify any of my essential data Ask the Android team about the stagefright exploit. Media players provide a huge attack surface. They are constantly exposed to untrusted files which are also very enticing for users to open (as opposed to, say, some spreadsheet) Yes. A media player normally doesn't modify your essential data, but when it's written in an unsafe language, it is very likely to do so one way or another.