As an added layer of security, you can enable Google Authenticator or two-factor authentication (2FA), which will require a six-digit code every time you log into your Exchange account.
To be clear, the Exchange 2FA is different from the ICO 2FA on Google Authenticator:
- Exchange 2FA will appear as "Cryptaldash"
- ICO 2FA will appear as "www.cryptaldash.com"
Be sure you know how 2FA works before you enable it for your Exchange account. Read on how this feature works here: https://www.google.com/landing/2step/