Prediction market breached by hair dryer… Man who stole 50 million won by manipulating Paris airport temperatures

Jinse Caijing reported that a weather betting market on the Polymarket collapsed futilely due to a man's hair dryer attack. A man artificially raised the temperature by placing a hair dryer near a temperature sensor provided by the French meteorological agency located outside Paris Charles de Gaulle (CDG) Airport. Exploiting the fact that the Polymarket's "Paris Daily High Temperature" market relies solely on this single sensor, he earned a total profit of $34,000 (approximately 50 million won) on two separate occasions. The French meteorological agency, having detected abnormal spikes in the weather data, launched an investigation and filed charges against the man for obstruction of business and fraud.