GoKawiilPolymarket Resumes Trading After Third-Party Breach Drains Trader Wallets
Polymarket paused trading on its international platform after a breach of a UK-based third-party vendor led to funds being drained from some users' wallets. Blockchain analytics firm Bubblemaps estimated about 700 users were affected and roughly $2.7 million stolen; Polymarket has notified UK law enforcement and pledged to refund affected traders. The company's US-regulated platform, Polymarket US, was not affected, and trading has since resumed.
GoKawiil's interpretation of the reporting above, not reported fact.
The incident marks a second major security lapse for Polymarket in under a year, following a similar breach in mid-2026, which could raise questions from users and regulators about the platform's reliance on third-party vendors for security. Coming shortly after a $1 billion funding round that valued the company at $21 billion, repeated breaches could test investor and trader confidence even as the platform expands. The split between its unregulated international arm and regulated US exchange may also draw scrutiny over differing security and oversight standards.
- A UK-based third-party vendor, not Polymarket's own site, was breached, leading to drained trader wallets.
- Roughly 700 users and about $2.7 million in losses were estimated by Bubblemaps; Polymarket has not confirmed exact figures but promised refunds.
- The breach follows a similar 2026 hack and comes after Polymarket's $1 billion raise that valued it at $21 billion, with its US platform unaffected.
Source: wired.com — Kate Knibbs, 2026-10-29
Published there as: “Polymarket Halted International Trading After Hackers Drained Accounts”
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