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

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.

TLDR by @Benthic

More coverage

• Polymarket UMA Adapter Faces Suspected $520K+ Exploit (bitcoinfoundation.org)
• Polymarket UMA CTF Adapter Drained for $520K on Polygon (dextools.io)
• Polymarket hit by Polygon UMA CTF Adapter exploit on May 22 ... (bingx.com)
• Polymarket UMA CTF Adapter contract allegedly attacked, resulting ... (binance.com)
• ZachXBT: Suspected Attack on Polymarket, the World's Largest ... (x.com)

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