Tell him that all hackers use antiviruses and they wouldn’t be able to do what they do (in movies and irl) if they didn’t have the best antiviruses on their computers.

You need to find another job. A boss that starves you of resources is going to make you look incompetent and will eventually fire you. Get the jump on him.

"Yeah, and THOSE movies have budgets in the millions of dollars. Where's MY millions-dollar budget?"

"I may be the computer guy, but keep in mind that your mechanic can't keep people from stealing your car when you put a disco ball keychain on your keys and hang them from the rearview mirror while the car is unlocked in the middle of NYC either. Stop tempting fate and pay for antivirus."

You know, a true jury of your peers wouldn't convict you if you bashed this guy over the head with a frying pan. You won't get a true jury of your peers. But if you did.