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Definitions and Terminology
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Z Cardholder Data EnvironmentArea of computer system network that possesses cardholder data or sensitive authentication data and those systems and segments that directly attach or support cardholder processing, storage, or transmission. Adequate network segmentation, which isolates systems that store, process, or transmit cardholder data from those that do not, may reduce the scope of the cardholder data environment and thus the scope of the PCI DSS assessment. A cardholder data environment is comprised of system components. See System Components. source: PCI DSS, 2008
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