The U.S. Department of Homeland Security sent out an alert on Monday warning U.S. firms and government agencies of a potential data risk from Chinese-made drones.

The notice titled 'Chinese Manufactured Unmanned Aircraft Systems' warns that sensitive flight data might be sent to their manufacturers in China, where it can be accessed by the government.

It goes on to say that U.S. officials have 'strong concerns about any technology product that takes American data into the territory of an authoritarian state that permits its intelligence services to have unfettered access to that data or otherwise abuses that access.'