Jeremy Scahill and John Begley write:  SIM cards were not invented to protect individual communications — they were designed to do something much simpler: ensure proper billing and prevent fraud, which was pervasive in the early days of cellphones. Soghoian compares the use of encryption keys on SIM cards to the way Social Security numbers are used today. “Social security numbers were designed in the 1930s to track your contributions to your government pension,” he says. “Today they are used as a quasi national identity number, which was never their intended purpose.”

The only effective way for individuals to protect themselves from Ki theft-enabled surveillance is to use secure communications software, rather than relying on SIM card-based security. Secure software includes email and other apps that use Transport Layer Security (TLS), the mechanism underlying the secure HTTPS web protocol. The email clients included with Android phones and iPhones support TLS, as do large email providers like Yahoo and Google.    Hacking SIM cards