Polymarket UMA CTF Adapter incident drains $520K on Polygon as VP points to old private key compromise

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ZachXBT flagged a possible Polymarket UMA CTF Adapter exploit on Polygon, with PeckShield saying two addresses were drained for roughly $520K by attacker 0x8F98075...d9B91. The adapter sits in Polymarket's UMA-based market-resolution path; Polymarket VP Engineering Josh Stevens said the team is investigating and that it looks like an old private key compromise, not a contract hack.

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Polymarket UMA CTF Adapter incident drains $520K on Polygon as VP points to old private key compromise

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Polymarket UMA CTF Adapter incident drains $520K on Polygon as VP points to old private key compromise

More on Private Key

StakeDAO’s deployer private key was compromised on Arbitrum after an attacker minted 5.4T vsdCRV tokens and began swapping the funds into ETH

Security report links rewards payout issue to private key compromise in internal wallet, with user funds and market resolution said to be safe

Eli5DeFi's $42,000 MegaETH wallet drained in apparent private key hack.

Wasabi protocol exploited for $5 million across ethereum, base, berachain, and blast due to private key compromise

Private key compromises caused $8.5B in crypto losses over a decade, about half of all hacks — SVRN's Schwed says real CISOs fix it

Private key compromises dominate crypto hack losses, driving 40% of $17B stolen across 518 incidents over past decade

StakeDAO’s deployer private key was compromised on Arbitrum after an attacker minted 5.4T vsdCRV tokens and began swapping the funds into ETH

Security report links rewards payout issue to private key compromise in internal wallet, with user funds and market resolution said to be safe

Eli5DeFi's $42,000 MegaETH wallet drained in apparent private key hack.

Wasabi protocol exploited for $5 million across ethereum, base, berachain, and blast due to private key compromise

Private key compromises caused $8.5B in crypto losses over a decade, about half of all hacks — SVRN's Schwed says real CISOs fix it

Private key compromises dominate crypto hack losses, driving 40% of $17B stolen across 518 incidents over past decade

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