If you notice suspicious activity on your account, such as messages you haven't sent or photos you haven't uploaded, there are a few things you can do to ensure your account is secure depending on your method of login.
If you believe someone's gained unauthorized access to your Facebook account, you may want to update your Facebook password immediately.
We encourage you to visit Facebook's security center for more information on securing your account.
To help keep your account secure, we require SMS verification any time you sign in to Tinder using your phone number. If someone were to attempt to access your account using your phone number, they wouldn't be able to login successfully without the SMS verification code. We highly encourage that you never share these codes with anyone.