Polymarket Hit By ‘Internal Top-Up’ Wallet Exploit, $700K Drained

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In brief We’re aware of the security reports linked to rewards payout. User funds and market resolution are safe. Findings point to a private key compromise of a wallet used for internal top-up operations, not contracts or core infrastructure. More updates to follow. — Polymarket Developers (@PolymarketDevs) May 22, 2026 UPDATE: ~$700k exploited • Suspected withdrawals have stopped • Polymarket said the incident was isolated and user funds are safeThe stolen funds were split across 16 addresses and routed through CEXs and other services Exploiter addresses:… https://t.co/gSXWv7UywX — Bubblemaps (@bubblemaps) May 22, 2026

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