The 6 reasons why Huawei gives the US and its allies security nightmares

The detention in Canada of Meng Wanzhou, Huawei's CFO and the daughter of its founder, is further inflaming tensions between the US and China. Her arrest is linked to a US extradition request on undisclosed charges, but China says it's a human rights violation and is demanding her swift release. Behind this very public drama is a long-running, behind-the-scenes one centered on western intelligence agencies' fears that Huawei poses a significant threat to global security. Among the spooks' biggest concerns are: The Chinese firm is the world's largest manufacturer of things like base stations and antennae that mobile operators use to run wireless networks. And those networks carry data that's used to help control power grids, financial markets, transport systems, and other parts of countries' vital infrastructure.