How to Turn on Two-Factor Authentication Setting up a secondary form of ID is one of the best ways to keep your online accounts safe amid endless data breaches.

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

When you have 2FA set up, you derail their plans. Two-factor authentication is used by a wide variety of organizations, from workplaces and schools to banks, social media companies, and more.