I have long encouraged the use of two-factor authentication (2FA) or two-step verification (2SV) with online accounts whenever possible (for more about the difference, see “Two-Factor Authentication, ...

You lock your doors—why not your accounts? Two-Factor authentication is your last line of online defense. Using a mobile authenticator app isn't hard to set up. Yeah, it takes extra seconds to get ...

Gift 5 articles to anyone you choose each month when you subscribe. Every day, millions of people sign in to their email, banking app or social media accounts with both their password and a one-time ...

One-time SMS codes are widely used as the second checkpoint in two-factor authentication (2FA) to sign into everything from banking apps to email accounts. As I've written before, though, SMS is one ...

We've probably all received confirmation codes sent via text message when trying to sign into an account. Those codes are supposed to serve as two-factor authentication to confirm our identity and ...