Collection 1 is a Massive New Data Breach

Troy Hunt, creator of the Have I Been Pwned? tool, wrote a blog post about the latest data breach called Collection 1.
Let’s start with the raw numbers because that’s the headline, then I’ll drill down into where it’s from and what it’s composed of. Collection #1 is a set of email addresses and passwords totaling 2,692,818,238 rows.It’s made up of many different individual data breaches from literally thousands of different sources.
To find out if your account credentials were leaked, visit haveibeenpwned.com.