On Saturday, attackers stole hundreds of NFTs from OpenSea users, causing a late-night panic among the site’s broad user base. A spreadsheet compiled by the blockchain security service PeckShield counted 254 tokens stolen over the course of the attack, including tokens from Decentraland and Bored Ape Yacht Club.
The bulk of the attacks took place between 5PM and 8PM ET, targeting 32 users in total. Molly White, who runs the blog Web3 is Going Great, estimated the value of the stolen tokens at more than $1.7 million.
The attack appears to have exploited a flexibility in the Wyvern Protocol, the open-source standard underlying most NFT smart contracts, including those made on OpenSea. One explanation…
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