Collection #1
What was exposed
Email addressesPasswords
What to do if you were affected
- Change your password for this account, and anywhere you reused it. Turn on two-factor authentication.
- Expect more phishing and spam at this address. Treat messages that reference this company with extra caution.
Details
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 .
Frequently asked questions
What is the Collection #1 data breach?
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...
When did the data breach happen?
This data breach occurred around January 2019.
How many accounts were affected?
Around 772,904,991 accounts were affected.
What information was exposed?
Exposed data included Email addresses and Passwords.
What should I do if I was affected?
Change your password for this account, and anywhere you reused it. Turn on two-factor authentication. Expect more phishing and spam at this address. Treat messages that reference this company with extra caution.
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