So how do you find out what site your email has been “pwned” for? Changing all my passwords would probably take a week!
The Have I Been Pwned? site shows the list of breaches associated with your email address, just scroll down if it comes up with breaches. If you use a different password for every site, you just have to change the ones on the affected sites. If you reuse passwords…well…good luck.
ETA: The list will also detail whether or not passwords were recovered, or if it was “just” personal details like name, email, address, porn habits, etc.