Have I Been Pwned is one of the oldest, most popular, and best sites that works hard to track down breaches, verify them as legitimate, and nab data so you can check it out. You can read more about site runner Troy Hunt and his thoughts on the business here.
You start by typing the address into your browser: https://haveibeenpwned.com/
Up pops the home screen where you can now type your email address into a basic search bar to see if your email address has been breached and by who and when.
If you have been breached you will get a message that says: Oh no — pwned!
It will indicate how many sites your email address has been breached on with suggestions on 3 steps to better security and then begins breaking down the information. It goes into a fair amount of detail about what data was compromised including if it was your:
- date of birth
- email address
- geographic locations
- IP addresses
It is a very simple tool and we highly suggest using it to maintain your security.