An API flaw exposed pending trade information before execution, allowing MEV searchers to sandwich trades and worsen prices for Relay users. The activity ran from Sep 12 to Sep 26, concentrated in the final days, netting searchers roughly $136k in profit. About 5,600 users were affected, with a median impact of $11.88. Relay is paying a $50k bounty to @Outputlayer for the report and compensating users automatically—no claim required—totaling approximately $312k. The author frames MEV as an evolving, industry-wide challenge requiring protections across the full trade path.

AI summary of the linked source — not editorial content.

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First post (Leviathan +7.3 h later) · @_jasonmaier · @wublockchain12 · @RuneCrypto_

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