Skip to content
AI Security

Interview question · Mobile Application Security

A vendor sells your bank an app-shielding (RASP and obfuscation) product. How do you evaluate whether it is worth it?

No shield is unbreakable, so 'can it be bypassed' is the wrong test. Measure how much it raises an attacker's cost on the threats you actually face, and what it costs you in crashes, performance and false positives.

hardNewPreparation tags: JPMorgan Chase, Apple, GoogleUpdated Nov 2026

No shield is unbreakable, so 'can it be bypassed' is the wrong test. Measure how much it raises an attacker's cost on the threats you actually face, and what it costs you in crashes, performance and false positives.

Make your first attempt

What would you say before reading the answer?

  1. 01 State the assumptions your answer depends on.
  2. 02 Explain the mechanism and choose a control.
  3. 03 Name a condition that would change your decision.

The worked answer includes an approach, scoring criteria and follow-up questions. Compare the reasoning with your own.

10 answers per topic instead of 5, plus saved progress and bookmarks · costs nothingor unlock all 529 remaining answers · $25

Every worked answer in all 17 topics, every lesson in every course, the full concept curriculum, the complete practice-test bank, and the downloadable security field guides.

6 months · One payment · No auto-renewal

What if · the follow-ups in this answer

The answer works through 6 follow-ups like an interviewer would

A vendor pitches an anti-tamper SDK that blocks rooted devices and hooking tools, promising to stop fraud in your banking app.

  1. Where should the evaluation start?
  2. How would you measure the product?
  3. What costs does it bring?
  4. How should it fit with server controls?
  5. What would a trial look like?
  6. How would you decide?

Each rung has a nudge, a model answer, the principle that carries over and the weak answer to avoid. Premium opens every answer and ladder.

UP NEXT ON YOUR JOURNEY
Next in this trackAn app ships an on-device language model and an AI assistant feature. What new security risks does that create on mobile?Next in this trackHow is certificate pinning bypassed on a device the tester controls, what does that prove, and how do apps and backends resist?Next in this trackWalk through Android's Network Security Configuration and iOS App Transport Security: what each controls, defaults and risky settings.
DISCUSSION · 0

No comments yet. Share a correction or a different way to answer it.