Skip to content
AI Security

Interview question · Application & API Security

How can webhooks be abused, and how do you verify them properly?

Verify the sender protocol, persist recoverable intake, distinguish delivery retries from business effects, and work through two offline fixtures and crash boundaries.

mediumNewPreparation tags: Salesforce, Amazon, MicrosoftUpdated Nov 2026

Verify the sender protocol, persist recoverable intake, distinguish delivery retries from business effects, and work through two offline fixtures and crash boundaries.

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 4 follow-ups like an interviewer would

A receiver verifies document-ready notifications and starts a result-publication job. The sender retries until it receives a successful acknowledgement.

  1. What if the receiver remembers the ID and crashes before enqueueing?
  2. What if a retry has a fresh timestamp but the same logical event?
  3. What if the downstream call times out after possibly completing?
  4. What evidence would justify accepting the corrected design?

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 trackExplain XXE and server-side template injection, and how you fix each.Next in this trackHow do you find business logic flaws that scanners cannot?Next in this trackWhat does each of SAST, DAST, SCA and fuzzing find, and what does each miss?
DISCUSSION · 0

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