1) there are always holes in network gear. They are either deliberately put in, or in there because network firmware is difficult time short and buggy as hell.

1) there are always holes in network gear. They are either deliberately put in, or in there because network firmware is difficult time short and buggy as hell. or SS7. 2) allowing Huawei to bid brings the price down. There aren't many major players, so a lack of competition means comedy quotes. (https://www.greyb.com/companies-working-on-5g-technology/ https://www.greyb.com/companies-working-on-5g-technology/) 3) france and germany can build them on their own, see above. I suspect there are some specific flaws that are exploitable, perhaps. But, it depends on where the kit is. If its part of the core routing fabric, then yes, thats possibly a problem. However most networks have total oversight, because thats how GCHQ et al operate. At the very least keep a connetion record of every event that happens on the network