How China Hacked America’s Phone Network

621.641 - 647.548 David E. Sanger

If you're going to do a banking transaction over your phone, you frequently get a code that comes back from the bank that you have to insert first so that they're sure that they're talking to you on your phone. And you insert it, and we've gotten used to it. It drives us crazy, but we all understand why we need to do it. In the cyber world, that's called multi-factor authentication.