Kurt Knutsson the CyberGuy explains why two-factor authentication will improve security on all your devices, and shows you how to enable it on your devices.

First, download the Microsoft Authenticator app, which is available for iOS and Android, and log in. Select the Security tab, ...

Yahoo Finance's Dan Howley discusses what is two-factor authentication and how to use it.

This is known as two-step verification rather than two-factor authentication because even though two questions are asked, the second factor of authentication isn't different from the first.