haveibeenzuckered.com
Checker for seeing whether a phone number or profile appears in Facebook-related breach data.
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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.
breachdetective.com
Breach Detective is a data breach search engine for checking whether personal data has been exposed in data leaks. It searches billions of records to show compromised credentials, including leaked passwords. Free, Pro and Ultimate plans differ in daily search allowances. Breach notifications are listed as coming soon.
breachdirectory.org
Breach exposure lookup service for checking whether an email appears in known breach datasets.
hotsheet.com
Email Breach Analysis is a free service that checks whether an email address appears in hacked data from known database breaches. It returns a summary of information that may be at risk, critical identity alerts, and a relative exposure rating.
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.
cybernews.com
Cybernews checker for seeing whether an email or phone appears in known data leaks.
github.com
A user-friendly Python toolkit for open source intelligence, providing key features such as image geolocation, social media profiling, email breach checks, domain lookup, metadata extraction, Google dorking, Wayback Machine queries, IP geolocation with blacklist checks, reverse image search, among others.
gopass.pw
gopass is a command-line password manager for developers and power users. It manages passwords, secrets and credentials from the terminal, uses Git for versioning and GPG for encryption, and stores data locally. It supports multi-user sharing and is described as free and open-source, with extensions for browser integration, Git credentials and breach checks.
haveibeenpwned.com
Pwned Passwords is a corpus of previously breached passwords made freely available so services can block them from being reused. It is free and open source, and offers API access or a downloadable dataset. Passwords are checked using k-anonymity so the full password or hash is not sent to the service.
haveibeenzucked.com
Checks whether a phone number or email appears in Facebook-related data exposure collections.
intelx.io
OSINT search platform for finding emails, domains, files, leaks, and public records across sources.
leaked.site
Leak-awareness search page for checking whether identifiers appear in exposed datasets.
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.
leakpeek.com
LeakPeek is a search service for checking whether an email, username, phone number or password has appeared in a data breach or password leak. It also offers searches of US and UK public records and a face search of public websites. Membership plans range from a 24-hour trial to three months of access.
monitor.mozilla.org
Mozilla service that checks email addresses against known breaches and explains protective steps.
github.com
Command-line tool for checking which known breaches may be linked to a target email address.