US EditionFrance probes Paris airport weather sensor tampering after reports of hair dryer use in Polymarket bet
Investigators say the spikes matched large, well-timed bets that paid out tens of thousands of dollars, and Polymarket moved its Paris feed to Le Bourget.
- Following suspicious temperature spikes on two occasions in April, Météo-France, the official meteorological agency, filed a police complaint with the Air Transport Gendarmerie Brigade regarding the "alteration of the operation of an automated data processing system" at Charles de Gaulle Airport.
- Climate enthusiasts from Infoclimat, a French climate nonprofit, speculated that a battery-powered hair dryer caused the anomalies, noting the airport sensor surged 4–5°C while nearby weather stations recorded no similar spikes.
- Successful bets on Polymarket, the prediction market, netted roughly $34,000, with one anonymous trader turning a $119 investment into over $21,000 by betting against an 18°C daily maximum on April 15.
- To secure more reliable data, the platform shifted its temperature resolution metric to a sensor at Le Bourget Airport on April 19, though it has not canceled or refunded any associated contracts.
- The breach reveals the vulnerability of decentralized "oracles" that prediction markets rely on to settle bets; if the "ground truth" source is compromised, platforms have no choice but to pay out on fraudulent data.
59 Articles
59 Articles
Radio Futura said that the street was burning with the sun of the west, and that’s what seems to have happened, against all odds, two days in early April in Paris, when the temperature recorded at Charles de Gaulle Airport went up several degrees as late as . Was this an unexpected and inexplicable weather phenomenon? Did the French capital reach the maximum well past the central hours of the day? It doesn’t seem likely. Especially after Météo F…
In two different episodes, anonymous gamblers have earned thousands of euros by betting on unlikely rises in the temperature in Paris: rises occurred in very tight arches of time (and quickly disappeared).The suspect: is there anyone who has made up a sensor at the airport of Paris with a hairdryer?
France investigates temperature spikes that led to big payouts on Polymarket
Early in April, Ruben Hallali got an unusual alert on his phone: The evening temperature at Paris Charles de Gaulle International Airport had jumped about 6 degrees Fahrenheit in seconds.
From the bets on the collapse of dictatorships, passing through the beginning of a conflict. On Polymarket, with the cryptocurrencies, you can bet money really on everything, even on the weather. The problem is when you suspect that someone tricks predictions even learning to control atmospheric events. One user has in fact wagered on the climate of Paris, for two days expecting an unusual surge of heat. Pointing a few tens of dollars has won ab…
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