Hack Camera All In Url Frame Can Others Hack Into My Computer And See Me If I Leave My Computer Camera On?

Can others hack into my computer and see me if I leave my computer camera on? - hack camera all in url frame

If I leave my computer in the eye of the camera all the time, hackers can have access to my computer and my business?
Is it easy for hackers to enter my computer.

What can I do to protect my computer against all voyeurs too?

I use the McAfee security software. Is it enough?