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Which mistake is present if a system denies access by default but mistakenly allows access to unauthorized users?

medium📝 Analysis Q7 of 15
Cybersecurity - Security Architecture and Design
Which mistake is present if a system denies access by default but mistakenly allows access to unauthorized users?
AFail-Safe Defaults pattern is not correctly implemented
BDefense in Depth is too strong
CLeast Privilege is applied perfectly
DOpen Design is causing the issue
Step-by-Step Solution
Solution:

  1. Step 1: Understand Fail-Safe Defaults

    This pattern requires denying access unless explicitly allowed.

  2. Step 2: Analyze the problem

    If unauthorized users get access, the deny-by-default rule is broken, meaning Fail-Safe Defaults is not correctly applied.

  3. Final Answer:

    Fail-Safe Defaults pattern is not correctly implemented -> Option A

  4. Quick Check:

    Fail-Safe Defaults broken = Unauthorized access allowed [OK]
Quick Trick: Fail-Safe Defaults means no accidental access [OK]
Common Mistakes:
MISTAKES
  • Blaming Defense in Depth for access errors
  • Assuming Open Design causes access control failures

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