PCI DSS (Payment Card Industry Data Security Standards)
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The Payment Card Industry Data Security Standard, a set of technical and operational requirements applying to every organization that stores, processes or transmits account data, and to any system that could affect the security of that data. It is maintained by the PCI Security Standards Council on behalf of the major payment brands. The current version is v4.0.1, published in June 2024. Every v4.x requirement, including those originally published as future-dated, became mandatory on 31 March 2025.