U.S. authorities are investigating whether TP-Link, a Chinese router manufacturer, poses a national security risk.Investigators from Commerce, Defense, and Justice departments are probing the company, and a potential ban on TP-Link routers is being considered.Chinese hacking entities have used compromised TP-Link routers for cyberattacks on Western targets.TP-Link routers are often shipped with security flaws, and the company has not adequately addressed these issues.