Aka.ms/mfasetup

If you are using office365 and want not to be hacked by hackers, then you must activate Aka.ms/mfasetup in order to protect your data. A 2nd factor is necessary because if someone gets access to your mailbox this person can also misuse and damage your data. 

Microsoft wrote it recently in their security blog. You have 99.9 percent less chance of a hacker Office 365 account if you don't have an MFA! A 2nd factor is really necessary. Often hackers already have your password in their possession. Activating Aka.ms/mfasetup to protect your identity is very important. If someone gets access to your mailbox this person can also misuse your identity. But important is not only to protect your mailbox but also your Google Account, your Facebook, PayPal and other important accounts you use.

Here you can set up your MFA and adjust settings yourself as an end user. At the bottom of the page, as an IT Administrator, you can roll out the entire organization with MFA.

Browse to: Aka.ms/mfasetup and open the Microsoft Multi-Factor Authentication page. Click on next

Choose mobile app and "Receive notifications for verification

Install the Microsoft Authenticator app on your iPhone or Android phone.