"A nationwide network using millions of SIM cards operated by China has the capability to wipe out communications across entire regions with a cyberattack; target large lists of victims for hoax SWAT calls; act as chatbots to interact with teens and young adults in online forums such as Reddit; and operate identity-theft rackets, among other applications." China behind massive nationwide SIM farm network that directly threatens American critical infrastructure https://www.theblaze.com/news/exclusive-china-behind-massive-nationwide-sim-farm-network-that-directly-threatens-american-critical-infrastructure