Hi Fiona,
Payment Card Industry Data Security Standard (PCI DSS) is a framework developed by major card brands and enforced by the PCI Security Standard Council (PCI SSC). PCI DSS was developed with the aim to protect cardholder data.
Cardholder data refers to all the information on a customer’s payment card. So, this will include Primary Account Number (PAN), cardholder name, service code, expiration date, and Sensitive Authentication Data which includes the Full Magnetic Stripe Data, CAV2/CVC2/CVV2/CID, PIN/PIN Block to name a few.
Visit this link :
www.vistainfosec.com/blog/what-does-pci-dss-protect/