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 ...

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 ...

Update, Feb. 26, 2025: This story, originally published Feb. 23, now includes additional commentary regarding the potential security implications of the decision to deprecate SMS from the Gmail ...