I think people really need to get more basic computer security/privacy knowledge ...
I have couple of friends that thought their webcam LED on their laptop was broken(always on) as usually most ask their significant other for IT advice. As the BF install the software in the first place ... they only realized after they broken up.
IMO, these anti virus suite is really easy to bypass if someone like significant other have access to computer.
I really think at OS level it should tell user when camera/microphone is being used in background or foreground for period of time. Like the current windows update that shows apps using microphone in taskbar.
This is why, I never really let someone used my personal computer/devices without me present.