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The 773 Million Record "Collection #1" Data Breach

Troy Hunt

Many people will land on this page after learning that their email address has appeared in a data breach I've called "Collection #1". It's made up of many different individual data breaches from literally thousands of different sources. Collection #1 is a set of email addresses and passwords totalling 2,692,818,238 rows.

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GUEST ESSAY: Until we eliminate passwords, follow these 4 sure steps to password hygiene

The Last Watchdog

With so much critical data now stored in the cloud, how can people protect their accounts? Until biometrics or a quantum solution change our everyday approach to encryption, passwords remain our first line of defense against data breaches, hackers, and thieves. 3) Activate 2FA on all accounts.

Passwords 244
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The 42M Record kayo.moe Credential Stuffing Data

Troy Hunt

This is going to be a brief blog post but it's a necessary one because I can't load the data I'm about to publish into Have I Been Pwned (HIBP) without providing more context than what I can in a single short breach description. In short, this data is a combination of sources intended to be used for malicious purposes.

Passwords 160