A video forensics team is analyzing a video that may have been created using a full-body synthesis technique. Which characteristic would be most indicative of this technique?

The person's face is perfectly sharp while the background is blurry.

The person's body movements are slightly unnatural or have a 'wavy' appearance.

The audio track is perfectly synchronized with the lip movements.

The video has a high frame rate and resolution.

A financial firm's incident response team receives a voicemail that appears to be from the CEO, urgently requesting a wire transfer. The team suspects a deepfake. Which combination of actions would best confirm the authenticity of the audio while preserving evidence for potential legal action?

Run a deepfake detection model on the audio and, if it flags the audio as fake, share the file with all employees as a warning.

Compare the voice against a public sample of the CEO's speech using a commercial voice recognition service, then delete the voicemail to avoid storage issues.

Analyze the audio for spectral artifacts and check the call metadata, then preserve the original file with cryptographic hashing.

Immediately call the CEO back on a known number to verify the request, and ignore the voicemail's content.

Which method is used to create an audio deepfake that makes a person appear to say words they never spoke, using only a short sample of their voice?

Text-to-speech with voice cloning

A forensic analyst is examining a facial image that is suspected of being AI-generated. The image has no visible artifacts to the naked eye. Which advanced technique would be most effective for detecting subtle manipulation?

Use a reverse image search to find the original image.

Analyze the image in the frequency domain for periodic patterns or anomalies.

Increase the image brightness and contrast to look for pixel-level inconsistencies.

Check the image's file size and resolution for anomalies.

Which generation technique is most commonly associated with creating a video deepfake that swaps one person's face onto another person's body?

Autoencoder-based face swapping

GIAC Offensive AI Analyst

Domain 3Objective 3

Audio, Image, and Video Deepfakes GOAA Practice Questions (Page 6)

Part of the AI-Enhanced Malware and Deepfakes domain, which makes up ~32% of our current practice bank. GIAC (SANS) does not publish an official question count, but from its 120-minute exam (~50–80 total, ~16–26 in this domain), expect 5–9 from this objective — we provide 48 practice questions to prepare you well beyond it. (estimate)

48questions here

10free pages

6concepts

Questions 26–30

26expert · hard
A video forensics team is analyzing a video that may have been created using a full-body synthesis technique. Which characteristic would be most indicative of this technique?
Select an answer first
27application · medium
A financial firm's incident response team receives a voicemail that appears to be from the CEO, urgently requesting a wire transfer. The team suspects a deepfake. Which combination of actions would best confirm the authenticity of the audio while preserving evidence for potential legal action?
Select an answer first
28foundation · easy
Which method is used to create an audio deepfake that makes a person appear to say words they never spoke, using only a short sample of their voice?
Select an answer first
29expert · hard
A forensic analyst is examining a facial image that is suspected of being AI-generated. The image has no visible artifacts to the naked eye. Which advanced technique would be most effective for detecting subtle manipulation?
Select an answer first
30foundation · easy
Which generation technique is most commonly associated with creating a video deepfake that swaps one person's face onto another person's body?
Select an answer first

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