In Short: As safe as it can be!
We utilize the latest and most up-to-date SSL technology to encrypt both, your order and all the information you provide. This way, your data is secured against any intrusion attempts along the way. Basically, none of your information is ever being seen by anyone but us.
Additionally, our servers are being super scanned on a regular basis for potential security threats. Furthermore, we don't store your credit-card information on our servers. Instead, we utilize the services of the popular and highly-regarded PayPal.