have i been pwned? - Check if your account has been compromised in a data breach
Have I Been Sold? - Check if your email address was sold without permission
Optery - See the private info data brokers post about you online
HackNotice - Find out when hackers steal your data or leak your identity
Data Breach Checker - Check if your email address was compromised
Have I Been Zuckered - Is your phone number present within the Facebook data breach