Steganography and Steganalysis ECES Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which steganalysis technique involves examining the statistical properties of a file to detect anomalies caused by hidden data?

   • AStructural analysis
   • BBrute-force attack
   • CStatistical analysis
   • DVisual attack
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   In the context of steganography, what is the 'cover medium'?

   • AThe secret message that is being hidden
   • BThe innocent-looking file that carries the hidden message
   • CThe algorithm used to embed the secret message
   • DThe encryption key used to protect the hidden message
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   What is the primary function of the tool 'Steghide'?

   • ATo hide data in image or audio files
   • BTo encrypt files using AES-256
   • CTo detect hidden data in files
   • DTo compress files to reduce size
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A security analyst suspects that an employee is exfiltrating sensitive data by embedding it in audio files that are being uploaded to a public file-sharing service. The analyst has a collection of these audio files and needs to determine whether any of them contain hidden data. Which approach should the analyst take first to efficiently screen the files for potential steganographic content?

   • ADecode the audio files using a common steganography tool to see if any hidden messages are extracted
   • BRun a statistical analysis tool that compares the noise floor and bit-level distribution of each file against known clean samples
   • CInspect the file metadata for unusual comments or tags that might indicate steganographic software
   • DPerform a visual attack by examining the waveform of each audio file for anomalies
   Reveal Solution Discussion Select an answer first
6. 10expert · hard

   A security consultant is advising a client on how to securely hide data in images that will be shared on social media. The client wants to use a steganography tool, but the consultant knows that social media platforms often recompress images, which can destroy hidden data. Which technique should the consultant recommend to maximize the chance that the hidden data survives recompression?

   • ALSB insertion on the original image before uploading
   • BUsing a transform-domain technique like DCT that embeds data in the frequency domain
   • CUsing a palette-based technique on a GIF image
   • DEmbedding the data in the image metadata
   Reveal Solution Discussion Select an answer first