Two-step verification (also known as 2FA or two-factor authentication) adds an extra layer of security to your account. With this feature turned on, you’ll need a six-digit security code as well as your username and password to sign into your account. You’d also need this code to link a new computer, phone, or tablet. You can have the codes sent to your phone in text messages or generated by a mobile app like Google Authenticator or Duo Mobile.
Dropbox also offers the option of using a security key, rather than six-digit codes, for two-step verification. Security keys offer extra protection against phishing attacks and are convenient to use.
1. Sign in to dropbox.com.
2. Click your avatar.
3. Choose Settings.
4. Select the Security tab.
5. Toggle Two-step verification to On.
6. Click Get started.
7. Re-enter your password.
8. Choose if you want to receive your security code by text message or mobile app. Click either Use text messages or Use a mobile app and follow the prompts.
9. Enter a security code to complete the setup (you'll receive it either via text message or authenticator app, depending on the preferred method you entered).
10. Click Next.
Note: If you use an authenticator app to receive your verification codes, please add primary and secondary backup phone numbers.