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Checker for seeing whether a phone number or profile appears in Facebook-related breach data.

Checker for seeing whether an email appears in the historical Ashley Madison breach dataset.

Investigative reporting archive focused on dark-web markets, breaches and underground actors.

Exposure checker for seeing whether a password or email appears in known breach data.

Narrative podcast documenting breaches, underground actors, darknet cases and security investigations.

Searchable timeline of publicly reported breaches with affected organizations, dates and data types.

Public breach-awareness service for checking whether an email address appears in known data breaches.

Identity Theft Resource Center database documenting publicly reported US data compromises.

Leak-awareness search page for checking whether identifiers appear in exposed datasets.

Mozilla service that checks email addresses against known breaches and explains protective steps.

Cybernews checker for seeing whether an email or phone appears in known data leaks.