The domain names stolen from the Ethereum Name Service’s (ENS) auction have been returned.

As CoinDesk reported at the time, the ENS bidding process managed by digital-collectibles marketplace OpenSea was exploited, allowing a hacker to nab 17 domain names for lower bids than other users placed. ENS and OpenSea asked the hacker to return the domain names, promising compensation for finding the bug.

An alternative to Web 2.0’s centralized domain name servers (DNS) system, ENS is built on top of the ethereum blockchain to leverage its immutability and decentralized properties. As it happens, immutability isn’t always a good thing.

Once the hacker claimed the ENS domain names – which included apple.eth – ENS and OpenSea’s only recourse was to blacklist the domains and ask for the hacker to return them.

Fortunately, they were.

The hacker was apparently swayed by an attractive offer: 25 percent of the final bidding price for each of the returned domains once they are re-auctioned. Some domain names are listed for impressively high bids such as the owner of coffeshop.eth asking for 100 wrapped ether, worth about $17,000 at press time. With 17 domains stolen, the hacker could be in store for a decent payday depending on the auction prices.

OpenSea says auctions will commence again in the coming weeks.

Speaking with CoinDesk, ENS lead developer Nick Johnson said OpenSea had no direct communications with the hacker before the domains were returned. The company solicited feedback in a Sept. 29 blog post disclosing the bug.

“Evidently the hacker thought 25 percent was a better deal than trying to resell them themselves in the face of blacklisting. Or perhaps they’re just generous – either way we’re grateful.”

Gift image via Shutterstock

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