According to a tweet from the betting site, a third-party seller has been compromised and some Polymarket users have lost money to hackers. The company hasn’t confirmed how much the loss is, though independent monitors at X suggest it could be around $3 million.
“This morning we discovered that a 3rd party vendor was compromised by injecting a malicious script into our frontend for some users. We have contained it and removed the affected dependency,” Polymarket wrote on its X page.
“One X account claiming to be about$3 million loss,” said William LeGate, head of practice at Polymarket he tweeted: “We are refunding affected users in full, no user ‘losses’.” And while that doesn’t exactly confirm that it’s $3 million, it’s hard to conclude that the amount the hackers lost was in the millions.
LeGate responded to another X account that tweeted about the hackers:To date, losses are estimated at $2.94 million. This account, which tracks blockchain transactions, at least claims to be there 11 victims PUSD, Polymarket’s stablecoin, was emptied from its wallet. According to the account that provided the wallet addresses for the allegedly stolen funds, it was exchanged for Ethereum to launder the cryptocurrency.
It appears that there may be a phishing attack targeting Polymarket users, with a loss of $2.94 million to date.
The attacker withdrew funds from 11+ victim wallets holding PUSD, exchanged the stolen assets for ETH, and merged the proceeds at:… pic.twitter.com/6WfS0JhdDG
— Specter (@SpecterAnalyst) June 25, 2026
By applying to this account, LeGate he insisted“We have resolved the issue and are issuing full refunds to affected users.”
Polymarket has been high on social media this week after being praised by the likes of CNBC following an ad featuring music producer Rick Rubin. Andrew Ross Sorkin.
It’s rare these days that an ad stops me. It kept me cold. Whatever your view of prediction markets – and this is not an endorsement – the team behind this ad has created something truly remarkable. 👏👏👏 https://t.co/4EdgTfubEh
— Andrew Ross Sorkin (@andrewrsorkin) June 24, 2026
The compliment was much needed after a recent review by the company The Wall Street Journal It found that social media is full of hoax videos of people making big money on Polymarket. The creators were paid to make it look like they made hundreds of thousands of dollars, but it wasn’t real. Polymarket is said to have developed “perfect replicas of its website” that creators can fake trade and appear to be winning. But none of this was real.
Polymarket did not immediately respond to questions emailed Thursday about the hackers who may have made off with the $3 million. Gizmodo will update this article when we hear back.
