Security 101: Two Factor Authentication (2FA)

david@systemoverlord.com (David Tomaschik) — Thu, 07 May 2020 00:00:00 +0000

In this part of my “Security 101” series, I want to talk about different mechanisms for two factor authentication (2FA) as well as why we need it in the first place. Most of my considerations will be for the web and web applications, and I’m explicitly ignoring local login (e.g., device unlock) because the threat model is so different.

Authentication on System Overlord

Security 101: Two Factor Authentication (2FA)