To improve the security of your account, we strongly recommend you set up two-factor authentication (2FA). It will add one more security code request after you enter your username and password.
To enable 2FA, please go to personal account menu and select "Edit user settings"
Please make sure you have entered your telephone number and checked the "EnableTwo-Factor Authentication" check-box in the opened dialogue box. The telephone number will be used as a device to receive verification codes.
For the best experience, we recommend you downloading free Twilio Authy application available for iPhones and Android. It works very fast and is the most convenient way if you don't have corporate restrictions for installable applications.
Otherwise, you can skip this step and we will send you verification codes via text messages (SMS). This option is slower, but you won't need to install any applications to your smartphone.