Two-Factor Authentication — Protecting Your Own Accounts First
What 2FA is, the different types, and a setup guide for your critical developer accounts
Before we talk about adding 2FA to your app, let's talk about something more urgent: your own accounts. Your GitHub, your cloud provider, your email — these are the keys to your kingdom. If someone gets into your GitHub, they have your code. If they get into your email, they can reset passwords for everything else.
Two-factor authentication is the single most effective thing you can do to protect yourself.
What 2FA Actually Is
Two-factor authentication adds a second step to logging in. Instead of just something you know (your password), you also need something you have (your phone, a hardware key, a code).
The idea is simple: even if someone steals your password (through phishing, a data breach, or guessing), they still can't get in without the second factor.
Without 2FA:
- E
This lesson is part of the Guild Member curriculum. Plans start at $29/mo.