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Seven Million OpenSea Emails Compromised

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by Giorgi Kostiuk

2 months ago


The security breach that hit OpenSea in 2022 has resurfaced with millions of email addresses now exposed publicly, posing significant risks to users.

The OpenSea Breach Timeline

In June 2022, OpenSea was at its peak of success. During this period, an employee from Customer(.)io, an email automation provider, exploited their access to extract and share email addresses from OpenSea's user database with unauthorized third parties. This leak not only targeted the platform’s user base but also compromised prominent figures in the cryptocurrency world, including Binance’s CEO Changpeng Zhao.

The incident highlights the need for robust security systems to protect user data.Security Expert

Consequences of the Leak

Cybersecurity has confirmed that the data leak, including emails of industry leaders and traders, is now fully public. These individuals have become prime targets for phishing attacks that can lead to significant financial loss and damage reputations. Such attacks are dangerous as phishing emails mimic legitimate communications, tricking users into sharing personal information.

Recommendations for Affected Users

SlowMist’s expert advises users whose emails are part of the breach to take extra security measures. These include creating strong, unique passwords, using password managers, and enabling two-factor authentication through authenticator apps. OpenSea also advised users to be cautious of emails from suspicious domains that mimic official communications.

Phishing attacks remain a major threat in the crypto space, with substantial financial losses from scams in 2024. The OpenSea incident underscores vulnerabilities in third-party services, highlighting the need for stricter security measures.

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