U.S. government says SMS codes aren’t safe – so now what?

GUEST: We’re all familiar with the SMS text message based security codes used as a security feature by huge numbers of websites from social networks to email to online payments. This is the feature that aims to verify your identity after you log in with a password, by sending a text message to your phone with a code that you use to access the site.
But SMS security codes aren’t safe and should be avoided. That’s the news that’s been circulating over the last few days from