Across Protocol revealed that a relayer attack led to net losses totaling less than $4 million, emphasizing that user funds were not impacted by the incident. The protocol explained the attack targeted relayer operations, which differ from end-user wallets in how they handle capital.

Details on the Incident and Impact

Relayers in Across Protocol provide upfront capital to process transfers on destination blockchains before being reimbursed from the source chain. This structure means the relayer's own capital, not user deposits, faced risk during the attack. The protocol clarified that the losses remained contained within this relaying layer and did not affect the funds users have deposited or transferred across the bridge.

This separation of risk is a key design element, allowing end-user assets to stay protected despite vulnerabilities in protocol infrastructure. The net loss figure being under $4 million highlights the attack’s limited financial impact.

The attack’s nature and losses were outlined in statements posted on X by Across Protocol. This event follows other recent developments in crypto infrastructure, such as KULR Technology’s Bitcoin sale to manage credit lines.