Phone calls are not secure. It's pretty easy to get control of a phone number. The local number porting process is really easy to exploit, as is the network i

Phone calls are not secure. It's pretty easy to get control of a phone number. The local number porting process is really easy to exploit, as is the network if you can obtain SS7 access. SS7 is very much like BGP in that it was designed for a time when security was not a criteria given any real consideration.