Yes security is one of our biggest considerations which is why we use STRIPE to take card payments.
Stripe has been audited by a PCI-certified auditor and is certified to PCI Service Provider Level 1. This is the most stringent level of certification available in the payments industry. To accomplish this, we make use of best-in-class security tools and practices to maintain a high level of security at Stripe.
For more info please see: https://stripe.com/docs/security/stripe