I have a Dell Inspiron 3558 laptop and my antivirus installed is a free product I got from CNET called Avast antivirus which lately has been bad for popping up boxes trying to sell you another one of their products.
I have a webcam but I've never used it but a few weeks ago an Avast box popped up and it wanted to prove to me that somebody could be watching me through my webcam; a few seconds later my face appeared on my laptop's screen which creeped.
Since that day I went ahead and placed a small piece of black electrical tape over my webcam. I never bought Avast's product which they claimed would offer me more protection but I still don't know if someone could be trying to watch me or not; that little demonstration by Avast really did creep me out.
Big Steve
08/24/18
On my train commute to work, I started to notice more and more of this behavior on people's laptops. More often than not, people have a piece of masking tape or sticky note blocking their laptop camera. Are people just paranoid that the camera may suddenly start recording them or is it because they are camera-shy during video conferences? I personally do not block my camera on my laptop, but it has got me thinking about it. Should I be, but for what reason? Maybe I'm overthinking this, but I am curious as to why people do it and if you do, why? If for laptops, should they be covering up their phone cameras too? Looking forward to what you think. Thank you.
--Submitted by Karen A.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic