Data breach
Collection #1 data breach
772,904,991 accounts · breached January 7, 2019
Have I Been Pwned marks this breach as unverified: the data could not be confirmed as coming from the named service, although it contains real email addresses.
What happened
In January 2019, a large collection of credential stuffing lists (combinations of email addresses and passwords used to hijack accounts on other services) was discovered being distributed on a popular hacking forum. The data contained almost 2.7 billion records including 773 million unique email addresses alongside passwords those addresses had used on other breached services. Full details on the incident and how to search the breached passwords are provided in the blog post The 773 Million Record "Collection #1" Data Breach.
What data leaked
- Email addresses
- Passwords
What to do if you had an account
- Change the password. Change your password on this service. If you used the same password anywhere else, change it there too: attackers try leaked email and password pairs on other sites automatically. A password manager makes one unique password per site practical.
- Turn on two-step sign-in. Enable two-factor authentication where the service offers it, preferably with an authenticator app or a passkey. A leaked password alone is then not enough to get in.
- Expect targeted phishing. Leaked contact details are used to write convincing fake messages that mention the breached company or your real name. Do not click links in unexpected emails or texts about this account; go to the site by typing its address.
Check your email at haveibeenpwned.com
We do not run email lookups ourselves. The search is done on haveibeenpwned.com, the service this list comes from.