Yahoo suffered two massive breaches. The 2013 breach affected all 3 billion accounts. It remains the largest breach in history.
A collection of 773 million unique email addresses and passwords from multiple sources, shared on hacking forums.
An email verification service exposed 763 million records including email addresses, phone numbers, and personal data.
Hundreds of millions of AOL user accounts were compromised by a Russian hacker group.
LinkedIn was breached twice. The 2012 leak exposed 117 million passwords. A 2021 scrape leaked 700 million records.
A vulnerability exposed phone numbers, email addresses, and profile data of 533 million users across 106 countries.
Guest information including passport numbers and credit cards was stolen over 4 years before detection.
One of the largest breaches of an adult website, including 20 years of deleted records.
The social network's breach leaked 360 million email addresses and passwords.
An internal system bug exposed plaintext passwords in an internal log. Users were advised to change passwords.
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