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Have I Been Pwned
Gold Standard
The most trusted breach notification service. Indexes 12B+ leaked accounts across hundreds of breaches.
Search →DeHashed
Largest Database
Largest breach database available. Indexes leaked passwords, usernames, IP addresses, and more.
Search →IntelligenceX
Dark Web + Breach
Searches dark web, Tor, leaked data, and public sources. Strong on deep web breach indexing.
Search →Google Dork
Surface Web
Uses a search dork to find public references to the email address in breach reports and leaked documents.
Search →Leak-Lookup
Paste Manually
Broad breach search engine covering many lesser-known leaks. Navigate to site and paste email.
Search →BreachDirectory
Paste Manually
Fast directory of known breaches. Shows password hashes and exposure details for compromised accounts.
Search →Snusbase
Paid — Comprehensive
One of the most comprehensive breach search engines. Paid service but indexes many exclusive breach sets.
Search →Major Known Breaches — Reference Table
| Service | Year | Records | Type |
|---|---|---|---|
| RockYou2024 | 2024 | 10B+ | Password list |
| 2021 | 700M | Professional data | |
| 2021 | 533M | Personal data | |
| Twitter / X | 2023 | 200M | Email addresses |
| Equifax | 2017 | 147M | Financial / SSN |
| Yahoo | 2016 | 3B | Credentials |
| Adobe | 2013 | 153M | Credentials |
| Dropbox | 2012 | 69M | Credentials |
| MySpace | 2016 | 360M | Credentials |
| Collection #1 | 2019 | 773M | Email / password |
| Marriott | 2018 | 500M | Travel data |
| Canva | 2019 | 137M | Design platform |
| Twitch | 2021 | 125GB | Source code + data |
| T-Mobile | 2021 | 54M | Mobile data |
| LastPass | 2022 | Unknown | Password vaults |