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Polymarket Reports Significant Fraud Attempts Involving Stolen Cards

The prediction market platform Polymarket has reportedly encountered substantial fraud attempts, with over $10 million in transactions linked to the use of stolen credit cards.

PredictionSites Newsroom · 30 September 2026

Prediction market platform Polymarket has reportedly faced a considerable challenge from fraudulent activities. According to recent reports, the platform has become a target for scammers utilising stolen credit card information.

These illicit attempts to engage with the platform's markets have accumulated to a value exceeding $10 million. Prediction markets allow users to bet on the outcome of future events, with market prices often reflecting the crowd's aggregated probability assessments. Platforms typically require users to deposit funds to participate in these markets.

While the specific methods employed by the fraudsters were not detailed, the report highlights an ongoing issue for online financial platforms. Such incidents underscore the necessity for robust security measures and vigilant monitoring within the prediction market sector to protect against financial crime and maintain platform integrity.

Reported first by The Cool Down — read the original report. This article was written by the PredictionSites newsroom from that report.