You can secure your MyMalcolm user account using two-factor authentication (2FA). To use this feature you will need a native MyMalcolm user account, that is you are not using Sign In with Google.
To turn 2FA on click the "Enable two-factor authentication" button in the Security tab of your profile. To access your profile click your name at the top of the screen where it says "Logged in as".
You will then be shown a QR code you can scan in your choice of authenticator app. Alternatively there is also an option to be given a text code to enter into your authenticator app.
On the next screen, having added Malcolm! to your authenticator app, you will be asked to type in the current code. Once that code is accepted, as the final step of the process, you will be given some recovery codes which you should store safely and can be used to access your Malcolm! account if you are ever unable to use your authenticator app.
Please note that if you lose access to your authenticator app and your recovery codes we will be unable to restore access to your account!