Which technology is crucial for protecting credit card information during online transactions?

The Payment Card Industry Data Security Standard (PCI DSS) is crucial for protecting credit card information during online transactions because it is a set of security standards designed to ensure that all companies that accept, process, store, or transmit credit card information maintain a secure environment. PCI DSS outlines the requirements necessary to secure this sensitive data and protect it from breaches and fraud.

This standard includes various security measures, such as encryption, secure network architecture, access control, and regular monitoring and testing of networks, which are essential for safeguarding credit card information during transactions. Compliance with PCI DSS is imperative for any organization handling credit card transactions—failure to comply can lead to heavy fines, penalties, and reputational damage.

The other options, while related to security, are not specifically aimed at the protection of credit card information in the same way that PCI DSS is. For example, ISO 27001 is an information security management standard that applies broadly to all types of data and organizations, Data Loss Prevention (DLP) focuses on preventing unauthorized access and transfer of sensitive data, and Security Information and Event Management (SIEM) involves monitoring and analyzing security events but does not specifically target credit card transaction security.