We use Adyen as our payment service provider and we use their hosted payment service. This means that the actual payment and credit card data is not handled by us but directly by Adyen. This service is fully PCI DSS compliant (Payment Card Industry Data Security Standard).
When you enter your credit card number you are doing that on an Adyen hosted secure page. We (XLN) do not have access to your payment information. We only get information about payment method, amount, and if the payment was successful or not. This is handled automatically to match with created orders in our webshop.