Polymarket halts trading after users report $1.4 million drained from accounts

Polymarket halted all new trading on October 29 after a trader warned $800,000 was drained from his account and a friend lost $600,000, bringing reported losses to $1.4 million. The company has not confirmed a hack, but moved to cancel-only mode while investigating. The incident follows a $3 million attack in June and a $400,000 loss at rival Predict.fun days earlier.