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You need to design a secure online banking system. Which combination of security design patterns best reduces fraud and unauthorized access?

hard🚀 Application Q8 of 15
Cybersecurity - Security Architecture and Design
You need to design a secure online banking system. Which combination of security design patterns best reduces fraud and unauthorized access?
ASeparation of Duties and Open Design only
BOpen Design, Fail-Safe Defaults, and full admin access for all
CDefense in Depth only
DLeast Privilege, Separation of Duties, and Defense in Depth
Step-by-Step Solution
Solution:

  1. Step 1: Identify patterns that reduce fraud and unauthorized access

    Least Privilege limits user permissions, Separation of Duties divides responsibilities to prevent fraud, and Defense in Depth adds multiple security layers.

  2. Step 2: Evaluate options

    Least Privilege, Separation of Duties, and Defense in Depth combines all three effective patterns. Open Design, Fail-Safe Defaults, and full admin access for all includes insecure full admin access. The remaining options miss key patterns.

  3. Final Answer:

    Least Privilege, Separation of Duties, and Defense in Depth -> Option D

  4. Quick Check:

    Best fraud reduction = Least Privilege + Separation of Duties + Defense in Depth [OK]
Quick Trick: Combine patterns for stronger security [OK]
Common Mistakes:
MISTAKES
  • Ignoring Separation of Duties
  • Giving all users admin rights

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