Groups affiliated with Russia and Iran have increased their use of cryptocurrencies to buy drones and drone-making equipment, according to a new report by blockchain analytics firm ChainAnalysis. They are using the digital currency to finance the acquisition of low-cost military drones.

The use of commercially available drones has become increasingly important in the wars in Ukraine and the Middle East. These drones are readily available on e-commerce platforms around the world, making it difficult for authorities to track who is buying them and for what purpose.