A support team is answering calls and providing well support. It would be conceivable for someone to impersonate or ask for something which should be authenticated first. Which are the best methods ...
Twitter Digits (https://get.fabric.io/digits) provides an authentication/login system based on phone numbers for mobile apps, and several other mobile apps (e.g. Square Cash, ...
My phone operator is slowly abandoning TDM (Time Division Multiplexing) to replace it with IP connections. What are the security risked related to this change? will all the phone line be like in a big ...