If Dropbox detects a suspicious sign-in attempt, we will send a one-time security code to the email address associated with your Dropbox account as an additional security step.
Note: If you receive an email that seems like it’s from Dropbox and you’re unsure if it’s safe, you can check Dropbox’s official domains.
If you tried to sign in to your Dropbox account and received an email about a one-time security code, use the one-time security code to complete your sign in.
If you did not recently try to sign in to your Dropbox account and received an email about a one-time security code, someone else may be trying to access your account. Follow the instructions below based on the email you received.