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Interview question · Systems, OS & Memory Safety

How does Kerberos work in Active Directory, and how do Kerberoasting, Golden Tickets and delegation abuse exploit it?

Interviewers ask for the protocol first because every AD attack is a protocol property used against you. The strong answer derives each attack from a step in the ticket flow, then attaches the control that breaks it.

hardEssentialNewPreparation tags: Microsoft, CrowdStrike, Palo Alto NetworksUpdated Nov 2026

Interviewers ask for the protocol first because every AD attack is a protocol property used against you. The strong answer derives each attack from a step in the ticket flow, then attaches the control that breaks it.

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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 6 follow-ups like an interviewer would

An attacker has phished one standard domain user in a Windows Active Directory environment.

  1. How does Kerberos authentication work in AD?
  2. What does Kerberoasting abuse?
  3. How do you defend against Kerberoasting?
  4. What other paths does a standard user have?
  5. How do you reduce attack paths overall?
  6. How would you defend the domain?

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 trackHow do attackers steal and reuse credentials in a Windows enterprise, and how do you reduce the damage when an endpoint is compromised?Next in this trackWhat are the main classes of memory-safety bugs in C and C++, and why can one turn into code execution?Next in this trackWhat do ASLR, DEP/NX, stack canaries, PIE and RELRO each prevent, and what does an attacker need to get past each one?
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