Collection #1 Security Breach

password breach category 1

Here at Anderson Technologies we like to keep our clients updated on the latest cyber security news. We’ve covered such breaches as KRACK and the Equifax hack in the past, and now we’re reporting on a breaking data breach called Collection #1, which affects nearly 2.7 billion emails and password combinations.

What Exactly Is the Collection #1 Breach?

The Collection #1 Breach was first reported January 17, 2019, by Troy Hunt, a cyber security researcher and operator of Have I Been Pwned (HIBP). Hunt named the breach after the root folder—containing over 87GB of data—that was uploaded to a hacking forum. Comprised of around 773 million unique email addresses and 21 million unique passwords, this information seems to have been gathered from databases of personal information from over 2000 breaches as far back as 2008.

“This number makes it the single largest breach ever to be loaded into HIBP,” Hunt states in his blog post explaining the breach.

While this personal information may not be much use to one-off hacking attempts, the real danger comes with a technique known as “credential stuffing.” Gizmodo explains:

Basically, credential stuffing is when breached username or email/password combos are used to hack into other user accounts. This could impact anyone who has used the same username and password combo across multiple sites. This is concerning as the Collection #1 breach contains almost 2.7 billion combos.

How Do I Know if I’ve Been Impacted By the Collection #1 Data Breach?

Thankfully, the easiest way to see if any of your email addresses, usernames, or passwords have been affected by Collection #1 is to use Hunt’s HIBP. You may have even used this resource to know whether or not to change a password after past breaches like Equifax!

Hunt has painstakingly cleaned and entered all data from Collection #1 into HIBP’s (safe) search engine, allowing anyone to securely check if any individual user account information was compromised.

have i been pwnd

How Do I Keep My Accounts Safe from Future Breaches?

The nature of these data breaches indicate decoding of previously encrypted account information like email addresses and passwords. Anderson Technologies recommends protecting yourself with multi-factor authentication (MFA), as well as a password manager like LastPass or Dashlane.

“The only way to effectively deal with it is to use MFA,” says Joe Baker, Anderson Technologies Systems Administrator. “I like the MFA standard of something you know and something you have—you know your password, and you have your phone for authentication.

“Everyone should go to to check their email addresses. For me, after entering my email, I searched for and found my compromised email and old password in a matter of seconds. It’s shockingly easy to get this info once it’s out there in plain text. If it’s something that you care about, protect it with MFA. If you can’t protect the account with MFA, then don’t use that account.”

If you believe information vital to your business has been compromised (current administrator credentials, for example), immediate intervention can help mitigate further security threats. Senior Systems Administrator Eric Dischert suggests the following steps:

  • Update passwords for all affected accounts
  • Temporarily lock all systems until extent of the breach is known and appropriate steps have been taken
  • Ensure proper auditing and logging are running
  • Determine the root cause, impact, and necessary steps to fix
  • Deliver a public announcement (if industry regulations require it) and prepare for corresponding responses
  • Educate employees regarding breach details and lessons learned

As always, consult with your managed services provider to ensure all these steps are completed thoroughly enough to protect your business from further threat. For more information about Collection #1 and the consequences for your personal information, contact us here or at 314.394.3001.