A security researcher wants to test the steganographic security of a custom image format. The researcher needs a tool that can embed data in the custom format and also analyze the resulting files for statistical anomalies. Which type of tool should the researcher use?

A command-line tool that only supports LSB insertion in BMP files

A steganalysis tool that only detects hidden data in standard formats

A general-purpose steganography tool that supports common image formats only

A steganography library that can be customized to support the custom format and includes steganalysis functions

A security analyst is investigating a suspected steganographic communication channel. The analyst has a set of images that are suspected to contain hidden data, but the images have been compressed and resized. Which steganalysis technique is most likely to still detect the hidden data?

Analyze the DCT coefficients for anomalies in the frequency domain

Perform a visual attack by comparing the images to the originals

Check the file size for any increase compared to the original

Use a hex editor to look for appended data at the end of the file

Which of the following is a common method for hiding information in digital audio files?

Changing the file extension to .mp3

Modifying the least significant bits of audio samples

Adding whitespace to the end of the file

Altering the ID3 tag to include the message

Which of the following is a limitation of steganography?

The cover medium may be degraded or altered, making the hidden message detectable

It requires a large amount of computational power to hide data

It can only hide text messages, not binary data

It cannot be used with digital images

A company wants to embed a watermark in their product images to prove ownership. The images will be distributed publicly and may be edited. Which steganographic technique is most appropriate for this purpose?

Use a robust watermarking technique that survives common image edits

Embed the watermark in the image metadata

Use LSB insertion in the spatial domain

Use a fragile watermarking technique that is destroyed by any edit

EC-CouncilCertified Encryption Specialist

Domain 4Objective 4

Steganography and Steganalysis ECES Practice Questions (Page 3)

Part of the Applications of Cryptography domain, which makes up ~25% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~13–20 in this domain), expect 3–5 from this objective — we provide 42 practice questions to prepare you well beyond it. (estimate)

42questions here

9free pages

7concepts

Questions 11–15

11application · medium
A security researcher wants to test the steganographic security of a custom image format. The researcher needs a tool that can embed data in the custom format and also analyze the resulting files for statistical anomalies. Which type of tool should the researcher use?
Select an answer first
12application · medium
A security analyst is investigating a suspected steganographic communication channel. The analyst has a set of images that are suspected to contain hidden data, but the images have been compressed and resized. Which steganalysis technique is most likely to still detect the hidden data?
Select an answer first
13foundation · easy
Which of the following is a common method for hiding information in digital audio files?
Select an answer first
14foundation · easy
Which of the following is a limitation of steganography?
Select an answer first
15application · medium
A company wants to embed a watermark in their product images to prove ownership. The images will be distributed publicly and may be edited. Which steganographic technique is most appropriate for this purpose?
Select an answer first

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