Skip to content
AI Security

Interview question · Detection Engineering & Incident Response

A finance employee is asked on a video call by a deepfaked 'CFO' to make urgent transfers. How do you defend against this?

The Arup case cost about US$25 million because everyone on the call looked and sounded right. The control that works does not involve spotting the fake at all.

mediumNewPreparation tags: JPMorgan Chase, Microsoft, GoogleUpdated Nov 2026

The Arup case cost about US$25 million because everyone on the call looked and sounded right. The control that works does not involve spotting the fake at all.

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 regional finance manager receives an email from the CFO about a confidential acquisition, followed by a video call where the CFO and two colleagues ask for several transfers today to new accounts.

  1. Why can't you rely on the employee spotting that the call is fake?
  2. What should the manager do before paying?
  3. What if the attacker also compromised the CFO's real email account?
  4. What if the manager is senior enough to approve the payment alone?
  5. What if the money has already gone?
  6. What controls would you put in place across the company?

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 trackWalk me through how patches actually reach production: Windows, Linux, containers and appliances, with rings, reboots and rollback.Next in this trackA critical vulnerability in a widely used library is disclosed on a Friday afternoon. What do you do in the first 24 hours?Next in this trackHow would you use honeytokens and deception to detect an intruder, and how do you keep them from creating risk or noise?
DISCUSSION · 0

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