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The Payment Card Industry Data Security Standard (PCI DSS) has been in place since 2004, with PCI DSS 4.0 first rolled out in 2022 and going into full effect by March 31st, 2025! The overarching goal is simple, to protect cardholder data. In accordance with PCI DSS Requirement 4, companies must protect cardholder data with strong cryptography during transmission over open or public networks because it becomes easy and/or common for a malicious individual to intercept and/or divert data while in transit.
While the database issues and solutions for this are well known, the real challenge is around unstructured data, where credit card information finds its way into email and documents, which are then transferred around and outside the organization creating unnecessary risk. When it comes to email security, this translates to the strict prohibition of end user messaging technologies like email for capturing, transmitting, or storing credit card information, including primary account numbers (PAN).
Find out more in our guide to PCI Compliance Best Practices.