Prediction Markets Some Polymarket user funds stolen by hackers; exchange referring matter to U.K. authorities

cnbc ^ | Oct 29 2026

[BenLurkin]

It’s unclear how many users were impacted. The company’s U.S. platform was not compromised.

Traders first reported on social media platforms that they were seeing unauthorized withdrawals from their accounts on Thursday afternoon. In response, the company halted trading on its international platform.

Polymarket said that it has fixed the issue on its end, and that trading resumed at 3 p.m. ET. It told users later in a chatroom on Discord that users who had less than $10,000 taken from their wallets will have funds restored by Oct. 30, and those with funds greater than that figure withdrawn will have to sign a release form to receive their restoration.

A person familiar with the matter told CNBC that the issue stemmed from a hack of DebugBear, a website performance monitoring platform. DebugBear in a post on X said that it was impacted by a security incident on Thursday. The person familiar with the Polymarket outage said that the company referred the matter to U.K. law enforcement, as that is where DebugBear is based.

DebugBear didn’t immediately respond to a request for comment.

An analysis of publicly-available data by two analytics firms — Betting Intelligence and Polysights — provided to CNBC said that an account on Polymarket Thursday withdrew at least $2.7 million across 710 other wallets.

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TOPICS: Business/Economy
KEYWORDS: binance; bitcoin; cryptocurrency; polymarket

[OttawaFreeper]

Probably an indicator of how not very reliable that site is to begin with.