Data breach directory
862 known data breaches, spanning two decades and billions of exposed accounts. Find a breach below to see what was leaked — or check your own email in seconds.
Check if my email was exposed — free →The biggest data breaches
Check your email against every breach at once
Instead of guessing, check your email against known breach and dark-web databases for free — then we’ll help you remove exposed data and keep watching for new leaks.
Run my free breach check →Browse all data breaches by year
Every verified breach we track, newest years first. Open any one to see what was exposed and what to do.
2026 · 54 breaches
2025 · 51 breaches
2024 · 72 breaches
2023 · 39 breaches
2022 · 52 breaches
2021 · 64 breaches
2020 · 89 breaches
2019 · 75 breaches
2018 · 66 breaches
2017 · 45 breaches
2016 · 84 breaches
2015 · 62 breaches
2014 · 45 breaches
2013 · 28 breaches
2012 · 16 breaches
2011 · 10 breaches
2010 · 4 breaches
2009 · 2 breaches
2008 · 3 breaches
Data breaches, answered
How do I know if I’m in a data breach?
Enter your email address in our free breach and dark-web check. It compares your email against known breach databases and tells you which breaches include you, and what was exposed — in a few seconds, with no account needed.
What should I do if my email was in a data breach?
Change the password on the breached account and anywhere you reused it, turn on two-factor authentication, and watch for phishing that references the breach. If sensitive data like your phone or address leaked, remove it from data-broker sites and monitor for it resurfacing.
How many data breaches are there?
We track 862 known, verified data breaches spanning two decades and billions of exposed accounts. Browse the biggest below, search by year, or open any breach to see exactly what was leaked.