Solana-based decentralized exchange Cypher Protocol halted its smart contract following an exploit that saw an estimated $1 million stolen.
On the evening of August 7 (UTC), Cypher confirmed that there had been a security incident, saying that the team was investigating it, but without providing specific information.
The event resulted in the smart contract getting frozen, it said.
Cypher has invited the attacker to open a conversation on the next possible steps, presumably so the two parties could start negotiating the return of the stolen funds.
Speaking of the funds, Cypher did not say how much the incident cost it.
Yet, Solana blockchain explorer Solscan shows that the wallet presumed to be related to the incident received some SOL 38,530 (worth $892,740 at the time of writing) and USDC 123,232.
In total, this means that the attacker potentially stole $1,015,961.
Blockchain security analysts at De.Fi Security shared similar figures.
Web3 security firm Beosin tweeted that the attacker's initial funds came from crypto exchanges KuCoin and Binance.
Soon after the attack, some funds have already been shifted. USDC 30,000 was moved to USDC address 'kiing.sol'.
This was done "possibly aiming to liquidate the stolen assets," De.Fi Security said.
This address currently holds $102.4 million in 110 tokens, including $55 million in SOL tokens and $24.25 million in USDC.
Meanwhile, people have been sending message-carrying non-fungible tokens (NFTs) to the attacker's wallet, asking the person to return the stolen funds, or as one user put it, "give it back you shitlord."
The attack comes during Cypher's mtnDAO hacker house event, co-hosted with Solana trading protocol Marginfi.
Marginfi said it works independently of Cypher and has
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