Specifically, NCISA Director Dusan Navratil said “China’s laws … require private companies residing in China to cooperate with intelligence services, therefore introducing them into the key state systems might present a threat,” according to Reuters. The agency added that the warning was made based on its own findings as well as that of allies. While not specifically mentioned, the US was likely one of them. After all, the US has made repeated statements of such nature.
The US first investigated Huawei for violating Iran sanctions back in April, followed by a nationwide ban on Huawei and ZTE for military institutions a month later. The latter was also barred from buying US-made electronic components, although the restrictions was later reduced by the US Department of Commerce. (Source: Reuters)