<p>Security incident linked to performance-monitoring tool spurred platform to halt trading for about an hour</p><p>Polymarket temporarily halted trading on its international platform on Thursday because of a security incident that compromised a third-party provider, the company said.</p><p>Trading was paused for about an hour and resumed on Thursday afternoon. The company has promised to fully reimburse any affected traders.</p> <a href="https://www.theguardian.com/world/2026/oct/29/polymarket-temporarily-suspends-trading-security-incident">Continue reading...</a>