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 ...

First, download the Microsoft Authenticator app, which is available for iOS and Android, and log in. Select the Security tab, then on the next page you'll see an option to select Two-Factor ...

A million two-factor authentication codes sent via SMS passed through an obscure third-party company. Here's how it happened and why it's a problem.

If a code shows up when you didn’t log in anywhere, someone is trying their luck with your account. Here are some signs to ...

Boost your Facebook and Instagram security in 2025 with two-factor authentication—learn how to set it up, manage devices, and protect your accounts now ...

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, ...

Logging into your Facebook account without a two-factor authentication code can be challenging, but there are several methods to help you regain access. Here are the steps and alternatives you can use ...

Android 15 blocks untrusted apps from reading sensitive notifications, even if they have permission to read all notifications. Before Android 15, apps with notification access were able to read all ...

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 ...