Ben has an issue with 2-factor authentication. Leo says that text message 2-factor authentication isn't safe anymore because "sim jacking" can occur, by bad guys figuring out what your cellphone number is, and then using social engineering to get them to reassign that number to a new SIM. Once they do that, they have control of the mobile device and can control even 2-factor authentication. That's why Leo supports using an authenticator. He uses a hardware-based model called Authy.
SMS Text messages
Christina keeps getting text messages from a number she doesn't recognize. And it's creepy. Leo says sometimes those messages are spoofed with a number id that doesn't exist and it's largely SPAM. Not much you can do but have your cellphone company block them. If it's the same number. If the number changes, it's a real problem to stop it. And if it's harassment, it may be a crime.
Alexandra works for a non-profit and she's having issues sending text messages to large lists of clients. There's now a limit of only 10 per text. Leo says the same thing happened with email. It's all because of spam, so they're limiting it. That's why Leo recommends a mass text service. Leo recommends EasyTexting.com. They offer low cost or even free service for non-profits.
Daniel can't use his Google Voice number when he signs up for services. Leo says that is right. Some services don't support it. But there is a way around it through GoogleFi. They use Sprint and T-Mobile, and that voice number then becomes an SMS number. Some numbers aren't SMS enabled.