Prediction market giant Polymarket hit by cyberattack, with company
confirming user funds stolen here is what we know

Date:
Fri, 26 Jun 2026 17:00:00 +0000

Description:
Polymarket confirms user funds affected and says it's refunding them in full.

FULL STORY ======================================================================Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Polymarket prediction platform was hacked via a compromised thirdparty vendor dependency, injecting
malicious scripts into its frontend Around $3M in crypto stolen from ~11 users, according to PeckShield; Polymarket is refunding victims in full while removing the affected dependency Community reactions on X were critical, with some blaming prior taunting hackers; one victim speculated the breach may
have involved Xorek Clouds VPS Polymarket, a prediction platform where people trade on the likelihood of different real-world events, got hacked and allegedly lost around $3 million in user funds. The company is now refunding the victims in full.

In a short post published on X earlier this week, Polymarket confirmed the news, saying it discovered that a third-party vendor had been compromised. Through that compromise, the attackers injected a malicious script into our frontend for some users. Since then, Polymarket said it contained the
incident and removed the affected dependency but did not say which dependency it was. It did not say which third-party vendor was compromised. Furthermore, it said it is currently contacting impacted users and refunding them in full, but did not state how many people were affected, or how much money is involved. Latest Videos From Watch full video here: Context-dependent vulnerabilities This morning we discovered a 3rd party vendor had been compromised, injecting a malicious script into our frontend for some users. We've contained it & removed the affected dependency. We're contacting impacted users & refunding them in full. June 25, 2026 In its write-up, TechCrunch cited blockchain monitoring firm PeckShield, which claims that around $3 million in cryptocurrency was stolen in the attack. The publication also reported that around 11 people were affected. Polymarket allows its
users to be paid in crypto.

X users who left comments on Polymarkets announcement seem utterly
unsurprised by the breach. I spent weeks telling you this and you ignored it, one person said. The next time l find a vulnerability, l will sell it to criminal gangs. Three users suggested Polymarket deserved what had happened for taunting hackers in the past. One made a sly joke saying, how did you not predict this? You may like Polymarket blocks VPNs and tightens identity verification as over 30 countries ban the betting platform 'This is not an April Fool's joke': Crypto platform Drift suspends services after millions stolen OpenAI confirms security breach but says no user data was affected

Polymarket did not say which third-party vendor was compromised, but one of the users who lost funds in this attack speculates it happened through Xorek Clouds VPS :

I recently bought a VPS from Xorek Cloud and stored my private key on it,
they said on X . I'm not sure how the compromise happened, but that's the
only possible security risk I can think of. Are you a pro? Subscribe to our newsletter Sign up to the TechRadar Pro newsletter to get all the top news, opinion, features and guidance your business needs to succeed! Contact me
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Link to news story: https://www.techradar.com/pro/security/prediction-market-giant-polymarket-hit- by-cyberattack-with-company-confirming-user-funds-stolen-here-is-what-we-know


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