Polymarket Halts Trading, Pauses Relayer After $800K Account Drain

The pause on new orders while still allowing cancellations suggests a containment-first approach, but the absence of a confirmed cause leaves the market's operational integrity as the central open question. For a prediction market, where settlement and order-book reliability underpin every contract, an unexplained drain of this size is a reputational stress point that extends beyond the affected account to all participants relying on the relayer. Whether Polymarket discloses the root cause and resumes trading with a credible post-mortem is the key thing to watch.