PCI DSS stands for Payment Card Industry Data Security Standard, which is a set of security standards for protecting credit card data and other sensitive information processed during payment transactions. The standards are designed to strengthen the security of credit card data by implementing security measures in network security, data access security, personnel monitoring and security, physical access security, and data transfer security.

The PCI DSS was developed by the Payment Card Industry Security Standards Council and is mandatory for all organizations that process, store, or transmit credit card data, whether it's physical cards or electronic payments. To comply with the PCI DSS, organizations must regularly test and validate their security measures through an external Qualified Security Assessor (QSA) audit, such as Forty-two Security.

While LCL does not process credit card data, taking these measures makes LCL a reliable partner for customers who do. The most important criteria for processing this data are both physical equipment shielding and logical security.