Polymarket Breach Drains $2.73M From 737 Accounts in One Hour

AI Market Summary

A coordinated exploit drained $2.73M from 737 Polymarket accounts via a compromised third-party script and valid wallet approvals, not a contract flaw. Polymarket is reimbursing $3.9M. The event underscores persistent DeFi front-end and dependency risk, reinforcing caution toward prediction markets and crypto exposure broadly, though systemic contagion looks limited given the contained size and full refunds.

Impact level

● Medium

Affected assets

BTC/USDT+0.87%

AI Insight · BTC/USDTAI Insight

▼ Bearish

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On October 29, attackers drained about $2.73 million from 737 Polymarket accounts in one hour through 985 withdrawals. Investigators found valid wallet approvals were used rather than a smart contract flaw. Funds were swapped into POL and spread across wallets. Polymarket reported $3.9 million in refunds and said 95% of affected wallets were fully reimbursed.

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