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Interview question · Application & API Security

Review an API for security: authentication, authorisation, rate limits, mass assignment and schema validation.

Work through tenant, role, object and field checks, then extend the review to bulk exports, permission changes and resource budgets with executable acceptance cases.

mediumEssentialNewPreparation tags: Salesforce, Amazon, GoogleUpdated Nov 2026

Work through tenant, role, object and field checks, then extend the review to bulk exports, permission changes and resource budgets with executable acceptance cases.

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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 5 follow-ups like an interviewer would

A document service passes its result-read authorization matrix. It also supports label updates and asynchronous bulk exports for the same customer accounts.

  1. What if both caller and document have a missing tenant?
  2. What if a bulk export contains one foreign document?
  3. What if membership is removed while the export is queued?
  4. What if the API allows one enormous export within its request limit?
  5. What evidence would justify accepting the corrected design?

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