breachdirectory.org
Breach exposure lookup service for checking whether an email appears in known breach datasets.
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haveibeenzuckered.com
Checker for seeing whether a phone number or profile appears in Facebook-related breach data.
intelx.io
OSINT search platform for finding emails, domains, files, leaks, and public records across sources.
leakedpassword.com
Leakedpassword.com searches across multiple data breaches to check whether a password has been compromised. It also provides an API for use in signup processes to validate users' passwords, drawing its data from Have I Been Pwned and requiring no authentication.
ashley.cynic.al
A tool for checking whether an email address appears in the Ashley Madison breach data. The site states about 36 million accounts were compromised, including some duplicate email addresses, and advises changing passwords. It also notes that Ashley Madison did not validate account email addresses.
github.com
Bellingcat tool for checking Telegram phone-number exposure and account discovery signals.
haveibeenpwned.com
Have I Been Pwned is a data breach search and notification service. It lets users check whether an email address appears in known data breaches and lists instances where data was found in paste records. It also offers an MCP server that connects AI agents to breach, password, paste, domain and stealer log data.
monitor.mozilla.org
Mozilla service that checks email addresses against known breaches and explains protective steps.