1) Put a tiny dot of Black 2.0, not very noticeable and blocks the light very well.
2) Don't do personal stuff on your company laptop. If the company doesn't let you modify it, joke's on them, only company files will get leaked. Your personal stuff shouldn't be on that laptop.
3) Fuck that, if there are photons you can collect them
If your camera has an activity light, this might inadvertently worsen your situation.