Myriad Voids 10 Prediction Markets After Internal Wallet Compromise, Says Funds Have Been Recovered

October 28 — According to The Defiant, BNB Chain ecosystem prediction market Myriad Markets said that on October 26, attackers used a compromised internal wallet to manipulate the outcomes of 10 prediction markets on BNB Chain. The platform has voided the affected markets and pledged to refund both long and short positions at the last price of each outcome before the attack; false profits already claimed will be deducted.

Myriad said it has recovered the funds and that the attackers did not withdraw any funds. Affected markets include whether Base will issue a token in 2026, the U.S. midterm elections, crypto and commodity prices, and George Russell winning the 2026 F1 Drivers' Championship. Myriad attributed the key exposure to a vulnerability in an unnamed third-party library used by its backend services, saying the exposure occurred several weeks ago. Refunds will come from the recovered funds and the market liquidity pools; users do not need to submit an application, and the payments will be automatically deposited into their wallets.