A user profited $34,000 by interfering with Polymarket's temperature forecasting market by heating weather sensors.

According to Huoxun Finance, a user profited $34,000 in the Polymarket weather forecast market by interfering with weather sensors at Paris airport. Polymarket previously used sensor data from the French meteorological service near Paris Charles de Gaulle Airport for settlement. The user purchased temperature options at extremely low prices, far exceeding market expectations. Subsequently, the user used a portable heat source to heat the sensors, causing the readings to spike dramatically in a short period and be recorded as the day's highest temperature. This behavior occurred twice, on April 6th and April 15th. The French meteorological service has detected the anomaly and filed charges.