Enterprise-Grade IT Security for Small and Medium Businesses: Building Security Systems, in Plain English

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

D. CherryEnterprise-Grade IT Security for Small and Medium Businesseshttps://doi.org/10.1007/978-1-4842-8628-9_7

7. Multi-Factor Authentication

Denny Cherry¹  

(1)

Denny Cherry & Associates Consulting, LLC, Oceanside, CA, USA

 

Any company that isn’t using multi-factor authentication (MFA), and using it correctly, is basically failing at information technology security right off the bat.

The concept of multi-factor authentication is fairly old these days, but still is often used incorrectly or not at all. The idea behind MFA is that to log in you need to know something, your username and password, and you have to have something—typically your cell phone or a multi-factor ...