Polymarket halts international trading after third-party provider breach drains wallets
The gist
Polymarket halted its international exchange after a compromised third-party provider drained user wallets.
Trading resumed within an hour; the loss total and cause remain disputed.
How it unfolded
- Jun 2026Polymarket suffered a frontend hack via a compromised third-party vendor, with about $2.94 million stolen from at least 11 wallets; it said it contained the incident and pledged to compensate users.
- Oct 29, 2026 ~14:00 ETDebugBear, a U.K. website performance monitoring service, described an "ongoing security incident" in a post on X, according to NBC News.
- Oct 29, 2026 17:05 UTCAn empty wallet began receiving funds, per blockchain investigator StarPlatinum.