Across Protocol Reports Relayer Attack with Net Losses Below $4M; User Funds Unaffected

ACX-1.83%
SOL-1.78%
According to Odaily, Across Protocol released a post-incident security report on its Solana relayer attack. Attackers exploited an off-chain event reader vulnerability to forge 1,627 fake deposits totaling approximately $41.7 million. Before the protocol halted Solana services, the relayer advanced about $4.5 million for 581 of those deposits, while the remaining $37 million in fraudulent charges became void. The protocol confirmed no smart contract vulnerabilities were involved and all user transfers were completed or fully refunded on the same day. Net losses came to below $4 million after deducting recovered attacker funds. Solana order flow has been rerouted entirely through CCTP.
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