SwappedEns

SwappedEns refers to a security vulnerability that affected the Ethereum Name Service (ENS) protocol. The issue allowed an attacker to swap or re-register a domain name that had already been registered by another user. This was possible due to a flaw in how ENS handled domain name ownership transfers and registrations.

Specifically, the vulnerability exploited a race condition. When a user initiated a domain transfer, there was a window of time before the transfer was finalized on the blockchain. An attacker could use this window to register the same domain name, effectively hijacking it from the original owner. This could lead to significant financial losses and reputational damage for affected users, as their domain names could be used for phishing or other malicious purposes.

The SwappedEns vulnerability was publicly disclosed and addressed by the ENS development team. They implemented fixes to close the race condition and prevent further exploitation. Users were advised to be vigilant and monitor their ENS domain registrations. The incident highlighted the importance of thorough security audits and rapid response mechanisms in decentralized protocols. While the specific vulnerability has been patched, it serves as a reminder of the ongoing challenges in securing blockchain-based systems.