SMS-based two-factor authentication may be headed out the door

SMS messaging for two-factor authentication might become a thing of the past. A U.S. federal agency is discouraging its use.The National Institute of Standards and Technology is pushing for the change. Its latest draft of its Digital Authentication Guideline, updated on Monday, warns that SMS messages can be intercepted or redirected, making them vulnerable to hacking.Many companies, including Twitter, Facebook, and Google, as well as banks, already use the phone-based text messaging to add an e