OpenSea users’ email addresses leaked in data breach

NFT marketplace OpenSea today that it has been the victim of yet another data breach – although this time the target is one of its providers. An employee of its email delivery provider allegedly downloaded saved email addresses associated with OpenSea accounts and newsletter subscriptions and shared them with an unknown third party. Any OpenSea account holder or newsletter subscriber should assume their email address is one of those affected, according to the company’s security chief, Cory Hardman. At this point, no passwords or other personal information appear to have been stolen.

The company is working with to investigate the matter. “Please remain vigilant in your email practices and be vigilant of any attempt to impersonate OpenSea via email,” Hardman wrote.

Contrary to a previous event on OpenSea in February where hundreds of NFTs were stolen, there appears to be no other reported damage apart from the leaked email addresses. Nonetheless, the number of people likely to be affected by the breach is significant. Had read that 1.8 million users have made purchases on OpenSea via the Ethereum network, according to Dune Analytics data.

Yesterday sent the company to OpenSea users they suspected of being involved, warning them to be on the lookout for phishing emails and other scams. Along with the usual advice not to download attachments or click a link from an OpenSea email, users were also warned against signing wallet transactions directly from an email, or sharing or confirming secret wallet phrases .

The identity of the third party that obtained the hacked email addresses has not been disclosed. A representative from TechCrunch that the employee behind the breach had “role-specific” access to the OpenSea data he was misusing. “We don’t believe other customers’ data was compromised, but we will investigate further. The employee in question has had all access revoked and has been suspended pending the completion of our investigation.”

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