Impact & Downstream Threats
This breach carries high risk due to the nature of exposed data fields and the scale of affected records.
- Targeted phishing campaigns using exposed email addresses
Breach Intelligence
Executive Summary
In June 2022, OpenSea, a leading NFT marketplace, experienced a significant data breach involving the unauthorized exposure of user email addresses. The incident occurred when an employee of Customer.io, OpenSea's email vendor, misused their access to download and share these email addresses with an external party. OpenSea promptly notified its users, advising them to remain vigilant against potential phishing attempts resulting from the breach. The company collaborated with Customer.io and law enforcement agencies to investigate the matter. Customer.io confirmed the involvement of a senior engineer in the unauthorized data sharing, terminated the employee, and implemented enhanced security measures to prevent future incidents.,
About OpenSea.io
NFT marketplace platform.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 6.9M 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 2022, OpenSea.io experienced a data breach that exposed approximately 6.9M records containing personal information.
The exposed data includes fields such as email address.
Approximately 6.9M records were affected based on current breach intelligence.
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- A public-facing individual
- A high-profile executive
- A customer of OpenSea.io
- Or concerned about credential reuse
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