HeySpin does everything that is in their power to protect their players. To do so, they utilize the latest 128-bit Secure Socket Layer encryption technology. You can easily transfer funds to and from your account without having to worry about anything.
When you create your account you have to use a username and a password. It is your responsibility to keep that information safe and not share it with anyone else. If you believe that someone else is using your account, then you should contact Customer Support immediately.