Predict.fun, a prediction market operating on BNB Chain, confirmed on October 27 that unauthorized transfers totaling approximately 400,000 USDT occurred from a small number of user wallets. The platform stated that its preliminary investigation indicates a possible compromise of an externally hosted API documentation site and pledged full reimbursement for all losses directly resulting from the incident.

In its official statement, Predict.fun said the affected group was limited and that the suspected compromise of the third-party documentation site may have lasted only a short period. The company immediately took the site offline and said it will remain unavailable until the investigation concludes. No timeline was given for restoring access or completing the review.

Transaction data reviewed on BNB Chain and Ethereum showed the transfers unfolded in two main waves. Approximately 125,029 USDT moved on October 22, followed by 272,679 USDT on October 27, for a combined total of 397,708 USDT across 29 accounts. An additional transfer of 4,900 USDT occurred about one hour after Predict.fun issued its statement. In total, 33 transfers were recorded in the primary waves. These transactions were signed with the private keys controlling the affected wallets and did not interact with Predict.fun’s market or exchange smart contracts.

Platform Response and Reimbursement Commitment

Predict.fun committed to covering every loss tied directly to the incident. The company also promised to release a detailed post-mortem once its investigation ends, outlining the root cause and the security measures it will implement to reduce the risk of recurrence.

The statement did not provide a schedule for the reimbursements or additional technical details about how the suspected documentation-site compromise may have enabled access to user funds.

Background on Predict.fun Operations

Predict.fun launched in December 2025 and has processed more than 4 million orders with cumulative trading volume exceeding 1.8 billion dollars. In April 2026 the platform gained in-app access through Binance Wallet, allowing eligible users to trade prediction markets using balances held in their spot and funding accounts while Binance Wallet covered gas fees. The same month, YZi Labs announced a follow-on investment involving Susquehanna Crypto.

In September the company introduced a self-service developer dashboard that lets developers create applications, generate or import API keys, and monitor usage limits. Prior to the dashboard, developers obtained API keys through support tickets on Discord. The platform’s REST API, still described as a beta product at the time, supports order submission and cancellation, market data retrieval, account activity queries, and WebSocket feeds for live updates.

Certain markets also route USDT collateral through Venus Protocol to generate yield, with the platform taking a 10 percent management fee. Yield-bearing markets are marked with a special badge and can be paused or converted if liquidity conditions on Venus tighten.

As of the latest statements, Predict.fun’s investigation remains ongoing and the API documentation site continues to be offline. The company has not released further technical findings or a revised estimate of total losses beyond the approximately 400,000 USDT figure initially disclosed.