After failing to receive SMS text messages from five financial services websites that use them for two-factor authentication codes, Adam Engst resolved his problem with a quick call to T-Mobile to ...

Do you receive login security codes for your online accounts via text message? These are the six- or seven-digit numbers sent via SMS that you need to enter along with your password when trying to ...

SMS codes, which are the codes you receive via text messages when setting up 2FA using a phone number, are not well-protected. SMS messages are not end-to-end encrypted, meaning they can be ...

My advice has long been to remove phone numbers from your online accounts wherever you can, and avoid selecting SMS or phone calls for second factor or one-time codes.

SMS codes have long been less secure than other forms of authentication. With QR codes, Google aims to reduce users' dependency on carriers for account verification.

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.

SMS attacks either compromise phones/phone numbers or the messaging centers themselves within mobile networks. These messages are in plain text form—they’re not encrypted between sender and ...

Last month, Twitter announced its users would no longer be able to use text message two-factor authentication, or SMS 2FA, where a user gets their one-time code as a text message, for free.