A lot of companies employ automated network monitoring software. I don't see how that wouldn't notice it. Bear in mind, if you do something illegal via Tor as an employee at that company, they may well be lible (liable? Fuck, I never know which to use for that meaning, whatever).It depends entirely on your IT department though. I mean if you've got a competent team that actually does their job, sure they'll notice. And probably ignore it if it doesn't happen again, but who knows. If they're average, nobody'll be the wiser. I hear, but can't verify, that IT departments are downsized to the bone these days because of the whole cloud fad. You're probably fine.