Across Protocol has released a postmortem on a Relayer security incident. According to Foresight News, an attacker exploited a vulnerability in Risk Labs' off-chain event-reading software on Solana and forged 1,627 fake deposit events with a total face value of about $41.7 million.
Relayer completed 581 advance payments before Solana services were paused, involving about $4.5 million in its own funds. The remaining fake deposits, totaling about $37 million, were invalidated.
The incident did not involve a smart contract vulnerability, and all user transfers were completed the same day or fully refunded. The loss was limited to Risk Labs' own relayer capital, with about $4.5 million funded and net losses below $4 million after offsetting about $500,000 from the attacker.
Solana order flow has now been routed entirely through CCTP, and the ACX token buyback plan remains unchanged.
Across Protocol Reports Relayer Security Incident and Limits Losses to Under $4 Million
2026-07-25 02:33:40
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