Estonian Citizens (via Estonian Cybercrime Bureau) data breach

Breach date: 2018-06-07. Added to this index: 2018-06-11. Accounts affected: about 655K. Domain: not listed.

What happened

In June 2018, the Cybercrime Bureau of the Estonian Central Criminal Police contacted HIBP and asked for assistance in making a data set of 655k email addresses searchable. The Estonian police suspected the email addresses and passwords they obtained were being used to access mailboxes, cryptocurrency exchanges, cloud service accounts and other similar online assets. They've requested that individuals who find themselves in the data set and also identify that cryptocurrency has been stolen contact them at cybercrime@politsei.ee.

Breach data sourced from Have I Been Pwned, used under CC BY 4.0. Additional breach metadata provided by XposedOrNot. DataExposed is an independent service and is not affiliated with or endorsed by either.

What was exposed

  • Email addresses: The email address you used to register or log in. It is the most common field in breaches because it doubles as your username on most sites.
  • Passwords: The secret you use to sign in, stored by the breached service either in plain text, in a scrambled form called a hash, or encrypted. How it was stored decides how quickly it can be recovered.

What to do now

  1. Check whether your own address is in this dataset with the free email breach check.
  2. Change the password on this service and every other site where you used the same password.
  3. Turn on two-factor authentication on your email account first, because it is the reset path for everything else.
  4. Treat calls and messages that quote real details about you as hostile until you verify them another way.

Frequently asked questions

What data was leaked in the Estonian Citizens (via Estonian Cybercrime Bureau) breach?

The Estonian Citizens (via Estonian Cybercrime Bureau) breach exposed Email addresses, Passwords. About 655K accounts were affected.

Was I affected by the Estonian Citizens (via Estonian Cybercrime Bureau) breach?

Run the free email breach check with the address you used on that service. It will tell you whether your address appears in this dataset.

What should I do about the Estonian Citizens (via Estonian Cybercrime Bureau) breach?

Change the password on that account and everywhere you reused it, then turn on two-factor authentication. Passwords from this breach are traded and tried automatically against other sites.

Next steps