Enterprises authenticate users based on their knowledge, possession, or inherence of some evidence that they are the party with the given right of access. Some experts see the context of the user’s authentication such as the time, their network IP and device, and their location as the fourth factor of authentication.
Stephen Cobb, senior security researcher at ESET says you can assure greater security with each additional factor of authentication that you add.
MFA is more important than ever as attackers are increasingly breaking into accounts that use single-factor authentication and sometimes even those with two factors. In one example, attackers tried to get the second factor by using phishing texts that asked users to send over their tokens.