Data transmission is completely end-to-end encrypted (SSL).
Furthermore, PayPal Tracking Autopilot for Shopify complies 100% with OAuth2 requirements from Shopify and PayPal incl. data validation for authenticity and authentication.
In difference to other solutions, your data is not given to any human operator. Therefore, nobody has ever access to your shop or to your Paypal. Our system is designed for maximum security for you!