Actually, even Win10's built-in AV could cause some trouble for your system (not in missing attacks, this time around), but to the minimum. I'm a gamer and I use what's called "trainer" to cheat in games. Some of those trainers carry programs under "false positive" (it's used with computer viruses too not just biological). It is true that it's better safe than sorry (I stopped using false positive trainers because of that) but it is there even if it's a trivial thing. That's an example I faced. Not sure if there are others.