The Payment Card Industry Data Security Standard (PCI-DSS) is a proprietary information security standard for organizations that handle branded credit cards from the major card schemes.
The basic purpose of implementing the PCI DSS is to prevent any compromise of cardholder information at the hands of a malicious user. It helps merchants to protect their clients from facing any fraud over the internet, or in day to day credit card transactions by fulfilling all the requirements. By having a proactive approach towards the security of cardholder data, merchants decrease the probability of any potential online theft, fraud and security breach, which in turn helps prevent them from undergoing financial loss in the long run.