As for IT using a camera to spy on employees?
Whenever I hear something like that, I laugh a little and tell the user (with a perfectly straight face), "You don't need to worry about IT 'hacking' the camera on your laptop or tablet. We have much more reliable ways to keep an eye on what you're doing."
Then I go back to the task at hand and let them stew in their own paranoia.
I approve your evil ways.