Polymarket Suspends International Trading After $2.2M Security Breach
Polymarket has halted international trading following a security breach affecting a third-party provider, with estimated losses of up to $2.65 million.
Polymarket has halted international trading following a security breach affecting a third-party provider, with estimated losses of up to $2.65 million. This is an original Token Times brief based on reporting by CoinEdition, with live market data added, as of Fri, 30 Oct 2026 08:00:02 UTC.
The breach highlights vulnerabilities in decentralized platforms that rely on third-party services, potentially undermining user trust and raising questions about the security of funds in DeFi ecosystems.
- Polymarket suspended international trading after a third-party security breach.
- Estimated losses range from $2.2M to $2.65M based on blockchain data.
- The platform has committed to compensating affected users.
- Polymarket TVL dropped 6.3% over the past week to $350.05M.
Polymarket, a decentralized prediction market platform, has halted international trading after a security breach impacted a third-party service provider. The company acknowledged the incident and stated that it had addressed the vulnerability, but concerns remain about the safety of user funds.
Reports of unauthorized withdrawals have emerged, though Polymarket has not disclosed the exact amount of funds lost. According to estimates based on blockchain data reported by Unchained, the losses could be between $2.2 million and $2.65 million. Polymarket's total value locked (TVL) has also declined by 6.3% over the past week, currently standing at $350.05 million, as per DeFiLlama.
The breach has raised significant concerns about the security of decentralized platforms that rely on third-party services. While Polymarket has assured users that it will compensate those affected, the incident has drawn the attention of law enforcement, indicating the seriousness of the situation.
The broader crypto market remains in a downturn, with the total market cap at $2.7 trillion and 
Bitcoin down 1.70% in the last 24 hours. The Fear & Greed Index is at 30, indicating a state of 'Fear,' reflecting the overall market sentiment.
The incident highlights the risks associated with decentralized finance platforms and the potential for third-party vulnerabilities to impact user funds. As Polymarket works to resolve the issue, the market will be watching for further developments and the platform's response to restore user confidence.
Figures and sectors in this story, checked live against on-chain aggregators · October 30, 2026.
Token Times reads these figures directly from on-chain aggregators (DeFiLlama, mempool.space) at build time — independent of what any outlet reported. Sector totals aggregate every protocol DeFiLlama tracks in that category. Values are live and will change.
Polymarket Suspends International Trading After $2.2M Securi — questions & answers
What caused the security breach on Polymarket?
The breach was due to a vulnerability in a third-party service provider used by Polymarket.
How much money was lost in the Polymarket breach?
Estimates based on blockchain data suggest losses of $2.2M to $2.65M, though Polymarket has not confirmed the exact figure.
What is Polymarket doing to address the breach?
Polymarket has suspended international trading, fixed the vulnerability, and committed to compensating affected users.
Which outlets reported this story?
This is an original Token Times brief that synthesises reporting from CoinEdition. It is not a copy of any one article — follow the source links above for the original reporting.
Original summary — not financial advice. This is an original Token Times brief that summarises a development reported elsewhere and adds live market data for context; it is not the original article and reproduces no part of it. Follow the source link above for full details. Crypto is volatile and high-risk — always do your own research.