Businesses that store, process or transmit major credit card information are required to be Payment Card Industry Data Security Standard (PCI DSS) complaint, regardless of the business size, amounts being transmitted, or number of transactions placed. This standard ensures that credit card data is protected from theft in the event of a breach. Violation can result in monthly penalties up to $100,000. Although compliance does not guarantee security, it helps card issuers and banks to limit their liability should a cyber-attack occur.