[PCI DSS 1.x] 8.4 Encrypt all passwords during transmission and storage on all system components.

[READ-ONLY] Archives [RETIRED] PCI DSS v.1.x Questions and Answers Implement Strong Access Control Measures
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8.4.a For a sample of system components, critical servers, and wireless access points, examine password files to verify that passwords are unreadable
8.4.b For Service Providers only, observe password files to verify that customer passwords are encrypted