Yes, ScreenShield is powered by Shopify which is certified Level 1 PCI DSS compliant. This compliance extends by default to all stores powered by Shopify.
We are very serious about securely hosting your store and have invested significant time and money to certify our solution is PCI compliant. From annual on-site assessments validating compliance to continuous risk management, we work hard to keep our shopping cart and ecommerce hosting secure.