Security
Polymarket security breach halts trading as DeFi Llama estimates $2.7M loss
The Cryptonomist·October 30, 2026·1 min read
Polymarket halted trading on October 29, 2026, after a security breach via a compromised third-party provider drained accounts on its international platform. DeFi Llama estimated losses at about $2.7 million, marking the second third-party breach in recent months. Users reported unauthorized withdrawals on X before the halt.
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