To provide an additional layer of security, Coinbase may delay logins to your account if we don't recognize the Authy device used to generate your 2-step verification code.
If you DID NOT authorize the login attempt:
Immediately disable sign-in on your Coinbase account using the link in the notification email.AND
Secure your account by following these steps.
If you DID authorize the login attempt:
Take no action and your 2-step verification device will become trusted in 48 hours.OR
From the Coinbase login page, use the Verify your identity with a photo ID link to complete photo ID verification, then you'll be able to sign in with the device.OR
Use a previously-used 2-step verification app to sign in to your account immediately.
If you ever see suspicious activity on your account, follow these steps.