Can you be tracked on tor once you have stopped using it?

The question 'Can you be tracked on tor ' can be answered simply by saying that Tor is probably one of your best options at being anonymous on the internet. That being said there are always a possibility of being tracked. For instance if you had your internet connection tapped before you started using tor and your exit node was one controlled by the same people (big if), they could potentially find out who you were by a throttling your connection in some sort of regular pattern and comparing it with the exit node you used. In addition there is a small possibility of someone holding a zero day that would allow you to be anonymous. Or the version of Tor you downloaded could have been modified by a third party (assuming you didn't check the hash). You would probably have to be a pretty wanted man for anyone to use any of these techniques though. Again, Tor is one of your best bets, maybe in the future if you are more worried about it you could also use an anonymizing vpn (who have a canary that is not triggered) and a couple of other proxies.