The finding adds ‌to growing Western concerns about cybersecurity risks posed by Chinese-made networking equipment. Western governments have warned for years about hackers ​exploiting such devices, and U.S. regulators moved this year to restrict imports of foreign-made routers. Advertisement AdvertisementAdvertisement AdvertisementThe previously unreported backdoor, dubbed "Endlessdoors" by the researchers who discovered it, ships in multiple models of routers manufactured and sold by Zbtlink around the world under both the Zbtlink and Wiflyer brand names, according to Jacob Baines, the chief technology officer at ‌VulnCheck who found the backdoor. Whoever controls those domains could take control of ​the router and potentially use it to access ​other devices on the same network, he said. Reuters could not determine why ​the backdoor exists, what purpose it serves, or whether it has ever been abused.