It is not mandatory for you to set up two factor authentication for your account, but it is highly recommended as it adds an additional layer of security.

Once two step authentication is set up, your account will require a password and a code which will be sent via either email or text message to the email or phone number you have provided and verified. With the additional code, it becomes virtually impossible to access your account unauthorised. 

Follow the link to see how you can easily set up two step authentication for your account.

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