A compromised internal wallet drained $700K from Polymarket. User funds stayed safe. Here’s what happened and how the team responded. A security incident hit PolymarketA compromised internal wallet drained $700K from Polymarket. User funds stayed safe. Here’s what happened and how the team responded. A security incident hit Polymarket

Polymarket Exploit: $700K in POL Stolen, Executives Say User Funds Safe

2026/05/22 20:45
2 min read
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A compromised internal wallet drained $700K from Polymarket. User funds stayed safe. Here’s what happened and how the team responded.

A security incident hit Polymarket this week, shaking the prediction market platform briefly. An attacker gained access to an internal operations wallet used for rewards payouts. 

Polymarket Exploit: $700K in POL Stolen, Executives Say User Funds Safe

The breach triggered repeated POL token transfers, firing every 30 seconds across 166 transactions. 

Blockchain analytics firm Bubblemaps raised the alarm on X, alerting users as the losses climbed. By the time transfers stopped, roughly $700,000 in POL had left the platform.

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How the Polymarket Exploit Unfolded

Bubblemaps posted a live alert, warning followers that attackers were draining 5,000 POL every 30 seconds.

The firm tracked the stolen funds splitting across 16 separate wallet addresses. Those funds then moved through centralized exchanges including KuCoin and HTX. Changenow deposits also appeared among the identified destination addresses. 

Bubblemaps published all exploiter and deposit addresses publicly, urging users to pause activity on the platform.

What Polymarket Said About the Security Breach

The Polymarket developers team moved quickly to clarify the situation on X. Their statement confirmed that no smart contracts faced any exploitation. 

User funds and market resolutions remained fully secure throughout the incident. 

Developer Josh Stevens added more detail, pointing to a six-year-old private key sitting in an internal top-up configuration. 

He noted the team rotated the compromised key, revoked all production permissions, and shifted private keys to KMS key management systems going forward.

Polygon CTO and Platform Response Calm User Concerns

Polygon Labs CTO Mudit Gupta also weighed in, confirming that Polymarket contracts and user funds stayed safe. He identified the compromised component as the market initializer, separate from core user-facing infrastructure. 

Despite the initial wave of concern from users, Polymarket continued launching new markets without interruption. 

Executives, including Kakusan, echoed the same reassurances across their personal accounts. Partners of the platform began pursuing the stolen assets through the exchanges where the funds landed.

The post Polymarket Exploit: $700K in POL Stolen, Executives Say User Funds Safe appeared first on Live Bitcoin News.

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