ZachXBT Flags Suspected Attack on Polymarket's UMA CTF Adapter — Over $520K Lost!

On-chain investigator ZachXBT has raised a community alert flagging a suspected exploit targeting Polymarket's UMA CTF Adapter contract on the Polygon network. Losses from the incident are reported to exceed $520,000, with two specific contracts identified as affected.

The flagged contracts are 0x871D7c0f9E19001fC01E04e6cdFa7fA20f929082 and 0x91430CaD2d3975766499717fA0D66A78D814E5c5. The suspected attacker's wallet address has been publicly identified as 0x8F98075db5d6C620e8D420A8c516E2F2059d9B91, enabling the community to monitor further movement of funds.

Polymarket is the world's largest prediction market platform by volume, operating on Polygon. An exploit of its settlement infrastructure — the UMA CTF Adapter is the contract layer that resolves market outcomes — carries implications beyond the immediate losses, as it touches the integrity of how markets are settled. Users with…