[j027]

I don’t understand this being a “national security” threat.

Besides, mobile proxies exist which work differently. All you need is a mobile data plan that you run a proxy server on. It allows for easy IP rotation and since it’s a pool shared with other customers you cannot easily block it. This is because of things like CGNAT.

IP rotation is easy because reconnecting to the network gives you a new IP address.

Static residential proxies also are a thing, even if they are less effective sometimes.