All direct payment gateways offered by Wix.com and used by Cornerstone adhere to the standards set by PCI-DSS as managed by the PCI Security Standards Council, which is a joint effort of brands like Visa, MasterCard, American Express and Discover. PCI-DSS requirements help ensure the secure handling of credit card information by its service providers.
Payments processed through PayPal.Me or Paypal adhere to Paypal's security policy, which state that they "automatically encrypt your confidential info in transit from your computer to ours using the Secure Sockets Layer protocol (SSL) with an encryption key length of 128-bits (the highest level commercially available). Before you even register or log in to the PayPal site, our server checks that you're using an approved browser ‑ one that uses SSL 3.0 or higher." For further information on their Security Policy please visit: https://www.paypal.com/paypalme/pages/faqs?locale.x=en_US&country.x=US