Two-factor authentication adds a barrier between whoever's logging in and the account by requiring authentication in two ways, such as a computer and phone. This ...

Use the built-in authenticator rather than a separate app This article explains how to use two-factor authentication (2FA) in iOS 15, including how to turn 2FA on and how to turn it off. You can set ...

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, ...

A new report found that around a million two-factor authentication codes sent by text message appear to have been intercepted. A tech industry whistleblower revealed that the 2FA security codes passed ...

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 ...

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 ...

In “Two-Factor Authentication, Two-Step Verification, and 1Password” (10 July 2023), I explained that for true two-factor authentication, you needed to acquire your time-based one-time password (TOTP) ...

Update Sign-In & Security settings on iPhone, Mac, or the Apple Account page This article explains how to turn on iCloud two-factor authentication to protect your Apple ID/Apple Account from theft, ...