Impact & Downstream Threats
This breach carries high risk due to the nature of exposed data fields and the scale of affected records.
- Credential stuffing against reused passwords across other platforms
- Targeted phishing campaigns using exposed email addresses
Breach Intelligence
Executive Summary
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.
About Estonian Citizens
Estonian Citizens is an organization whose data was exposed in this breach. The dataset has been verified by ObscureIQ intelligence and indexed across breach notification platforms.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 655K records identified in breach intelligence sources.
- The data is indexed and searchable across breach notification platforms.
Recommended Actions
⚠️ Do not assume this is low sensitivity.
Non-clients may request a breach impact review.
Frequently Asked Questions
In June 2018, Estonian Citizens experienced a data breach that exposed approximately 655K records containing personal information.
The exposed data includes fields such as email address, password.
Approximately 655K records were affected based on current breach intelligence.
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- A public-facing individual
- A high-profile executive
- A customer of Estonian Citizens
- Or concerned about credential reuse
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