Polymarket Suffers Major Hack, Nearly $2.6M Stolen from 995 Accounts
A security breach on Polymarket's web interface resulted in the theft of $2.6 million from nearly 1,000 user accounts.
A security breach on Polymarket's web interface resulted in the theft of $2.6 million from nearly 1,000 user accounts. This is an original Token Times brief based on reporting by Crypto Economy, with live market data added, as of Thu, 29 Oct 2026 21:15:01 UTC.
The hack highlights vulnerabilities in decentralized finance platforms and the risks associated with third-party integrations, potentially undermining user trust in Polymarket and similar platforms.
- Polymarket lost $2.6M in a hack affecting 995 user accounts.
- Attack occurred through a malicious script from a third-party vendor.
- Polymarket's total value locked is $360.78M, down 2.7% in 7 days.
- Incident raises concerns about DeFi platform security and third-party risks.
- Polymarket Suffers Major Hack, Nearly $2.6M Stolen from 995 Accounts — this brief
- Polymarket Suffers $2.68M Hack, Promises User Compensation
Polymarket, a decentralized finance platform, suffered a major security breach on Thursday when a malicious script was injected through a third-party vendor, compromising user wallets and resulting in the theft of approximately $2.6 million.
According to reports from Crypto Economy and U.Today, the attack led to unauthorized transfers and forced liquidations, affecting 995 user accounts. The breach was quickly identified, with reports of suspicious activity flooding in shortly after the incident.
The consensus among the outlets is that the attack was facilitated through a vulnerability in a third-party component of Polymarket's web interface. Crypto Economy provides the exact figure of $2,654,211.42, while U.Today reports the amount as 'more than $2.6 million.'
This incident comes at a time when Polymarket's total value locked (TVL) stands at $360.78 million, according to DeFiLlama, marking a 2.7% decrease over the past seven days. The breach raises concerns about the security measures in place at decentralized platforms and the potential risks associated with third-party integrations.
In the broader market context, the total crypto market cap is $2.77 trillion, with 
Bitcoin down 1.23% in the last 24 hours. The Fear & Greed Index is at 51, indicating a neutral market sentiment. The incident may lead to increased scrutiny of security practices in the DeFi sector.
1 key figure independently matched across 2 outlets reporting this story.
Token Times extracts the figures each outlet reports and flags the ones that agree. Numbers cited by only one outlet are attributed in the brief, not shown as corroborated.
Figures and sectors in this story, checked live against on-chain aggregators · October 29, 2026.
Token Times reads these figures directly from on-chain aggregators (DeFiLlama, mempool.space) at build time — independent of what any outlet reported. Sector totals aggregate every protocol DeFiLlama tracks in that category. Values are live and will change.
Polymarket Suffers Major Hack, Nearly $2.6M Stolen from 995 — questions & answers
How much was stolen in the Polymarket hack?
Approximately $2.6 million was stolen from 995 user accounts.
What caused the Polymarket hack?
The hack was caused by a malicious script injected through a third-party vendor.
How many accounts were affected by the hack?
995 user accounts were compromised in the security breach.
Which outlets reported this story?
This is an original Token Times brief that synthesises reporting from Crypto Economy. It is not a copy of any one article — follow the source links above for the original reporting.
Original summary — not financial advice. This is an original Token Times brief that summarises a development reported elsewhere and adds live market data for context; it is not the original article and reproduces no part of it. Follow the source link above for full details. Crypto is volatile and high-risk — always do your own research.