7.3.3 The access control system(s) is set to "deny all" by default.
Defined Approach Requirements
7.3.3 The access control system(s) is set to "deny all" by default.
Customized Approach Objective
Access rights and privileges are prohibited unless expressly permitted.
Defined Approach Testing Procedures
7.3.3 Examine vendor documentation and system settings to verify that the access control system(s) is set to "deny all" by default.
Purpose
A default setting of "deny all" ensures no one is granted access unless a rule is established specifically granting such access.
Good Practice
It is important to check the default configuration of access control systems because some are set by default to "allow all," thereby permitting access unless/until a rule is written to specifically deny it.
purpose
Document and retain evidence of business justification for access.
compliance strategies
- Access request forms
- Justification logs
typical policies
- Access Justification Policy
common pitfalls
- No documentation of justification
- Missing records
type
Documentation/Process Control
difficulty
Low
key risks
- Non-compliance, lack of audit trail
recommendations
- Centralize access justification documentation
Eligible SAQ
- SAQ-D MERCHANT
- SAQ-D SERVICE PROVIDER
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