[PCI DSS 3.0] [PCI DSS 3.0] 7.2.3 Default “deny-all” setting.

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7.2.3 Default “deny-all” setting.

7.2.3 Confirm that the access control systems have a default
“deny-all” setting.

Without a mechanism to restrict access based on user’s need to know, a user may unknowingly be granted access to cardholder data. An access control system automates the process of restricting access and assigning privileges. Additionally, a default “deny-all” setting ensures no one is granted access until and unless a rule is established specifically granting such access.

Note: Some access control systems are set by default to “allow-all,” thereby permitting access unless/until a rule is written to specifically deny it.
 
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