Chattermill supports Two-factor Authentication. You can enable it via the Settings page in the Chattermill app.

Once enabled, log out of the application and log in again. You will be asked to set up Two Factor Authentication app:

We recommend using 1Password, Authy or Google Authenticator. You can also use Apple's built-in Passwords app. You will then be asked to enter a code from app.

On the next login, you will be prompted to enter a new code.

You can disable Two Factor Authentication (for example, if you are using Single Sign On which includes its own Two Factor Authentication) on the same Settings page.

We always recommend enabling Two-Factor Authentication or another strong authentication method (for example, SSO or Google Authentication with 2FA enabled) in support of standard username/password authentication.