The Commerce, Defense, and Justice departments have launched separate probes into the company, which controls approximately 65 per cent of the US home and small business router market.
Microsoft reported in October that Chinese hackers had compromised thousands of TP-Link routers to launch cyberattacks against Western targets, including government organizations and Defense Department suppliers.
The company's routers are widely used across federal agencies, including the Defense Department and NASA. The Justice Department is also examining whether TP-Link's significantly lower pricing violates federal anti-monopoly laws, the report said.