Computer Help and Support

-Facial recognition (increasingly used to unlock devices)
-Recording keystrokes to gain access to passwords, bank accounts etc.
-Companies checking up on employees to make sure they're really working
-Store images and videos of people undressed/doing something compromising, for blackmail or upload to other sites
-A few years back a student sued his/her PA school for secretly spying with school-supplied laptop, which turned out to be a school-wide thing


Here's an article from howtogeek that might help: https://www.howtogeek.com/210921/how-to-disable-your-webcam-and-why-you-should/

Incidentally I just put a piece of tape over my webcam too. Disabling it doesn't seem necessary.