Multi-factor authentication (MFA) on Office 365 helps protect your and VU’s information assets. MFA adds an additional layer of security on top of your regular username and password, which makes it harder for hackers to log into your account as if they were you.
Occasionally, When logging in to VU Systems MFA will prompt you to verify via your smartphone or tablet that it's you. This prompt is known as an MFA challenge.
Currently MFA is optional, but will be compulsory for all staff and students in 2020.