OpenSea user email addresses leak after data breach

The OpenSea user email address leak occurred after an employee of its email delivery vendor Customer.io misused their access to share email addresses with an “unauthorized third party.” This is a practice that OpenSea users and subscribers to the company’s newsletter shared with OpenSea. A March data breach at NFT marketplace OpenSea has affected all users' email addresses and login credentials, the company announced on Wednesday.

Credit: cointelegraph.com

OpenSea users will start receiving phishing emails from a compromised email delivery vendor in the aftermath of a data breach. If your email address was compromised by OpenSea, this means you will likely start receiving phishing emails soon.

One of your email delivery vendor's main jobs is not to leak user addresses around. Because of this data breach, OpenSea users could start receiving phishing emails with the idea of impersonating OpenSea and getting them to install malware or hand over their cryptocurrency private keys. OpenSea users should not click on any links in emails that start with "OpenSea Security", as these are misleading.

Thanks to OpenSea, we now know how much of an irreparable mess the crypto world is in. While the company believes there was no user information outside of email addresses, anyone sharing their crypto private keys with anyone - including themselves - would likely be affected.