Drift said a durable nonce attack helped drive its Solana exploit, as critics questioned why stolen USDC moved for hours without a freeze.
Drift Protocol, a Solana-based decentralized exchange (DEX), confirmed Thursday it was targeted in a roughly $280 million exploit, describing it as a “highly sophisticated operation.”
The platform took to X on to share its findings from a preliminary investigation, saying that the attackers exploited Solana’s durable nonces, a mechanism enabling pre-signed transactions, to seize control and drain funds. The protocol had earlier said it was experiencing an active attack and suspended deposits and withdrawals while coordinating with security firms, bridges and exchanges.
The attack began on Wednesday, with the theft involving multiple assets, including Circle’s USDC (USDC) and various altcoins. Onchain data later showed that the exploiter swapped the majority of assets into USDC, with the funds later bridged to Ethereum.
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