Website: https://cyber-leaks.com
Cyber Leaks is a breach checker website where you can validate the following types of information:
1. Email leaks – was your email found in leaked email records?
2. Facebook leaks – was it part of one of many FB breaches?
3. Twitter leaks – same as above for Twitter
4. Password leaks – hashes your password locally and securely sends it to their server to see if the the hash is found among breached passwords
5. Password strength – put in a password (I would use a proxy version of your real password) and see how long it will take to crack it
6. IP Info – get general info about your IP and browser
Full disclosure – the last time I used this, some of the captchas timed out and the experience was a little buggy, but it can be an educational resource.