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Interview question · Application & API Security

What are the value and the limits of using an LLM to review every pull request for security?

An LLM reviewer reads every change, which no human team can, and is confidently wrong some of the time. The scored answer places it as a triage layer, measures it, and protects it from the code it reads.

mediumNewPreparation tags: Google, Microsoft, AmazonUpdated Nov 2026

An LLM reviewer reads every change, which no human team can, and is confidently wrong some of the time. The scored answer places it as a triage layer, measures it, and protects it from the code it reads.

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.

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What if · the follow-ups in this answer

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

A team wants an LLM to review every pull request for security issues and is considering making its approval required for merge.

  1. What value can an LLM reviewer add?
  2. What are its limits?
  3. Should its approval be required for merge?
  4. What if the pull request contains text aimed at the reviewer?
  5. How would you measure whether it helps?
  6. How would you deploy it?

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.

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