How to debug?

Hello.
I want to debug MW3 to check one thing.
Is there vac in private match?

If so, how can I check something without risking VAC ban?

VAC wouldn't ban you for debugging.

I'm not sure.
But it sounds dangerous to debug VAC secured game. I'll not change anything in memory but I don't think VAC will like it.

Did you tested it?

I haven't tested anything, but think; What's wrong with debugging? Does it give you an advantage over other players; no it doesn't.