312-49 · Question #196
Harold is a computer forensics investigator working for a consulting firm out of Atlanta Georgia. Harold is called upon to help with a corporate espionage case in Miami Florida. Harold assists in…
The correct answer is B. Visual semagram. A semagram is a form of steganography that hides a message within something other than text. A visual semagram uses images, objects, or physical markings - rather than written words - to convey a hidden message. Writing symbols on the back of stop signs is a classic example…
Question
Harold is a computer forensics investigator working for a consulting firm out of Atlanta Georgia. Harold is called upon to help with a corporate espionage case in Miami Florida. Harold assists in the investigation by pulling all the data from the computers allegedly used in the illegal activities. He finds that two suspects in the company where stealing sensitive corporate information and selling it to competing companies. From the email and instant messenger logs recovered, Harold has discovered that the two employees notified the buyers by writing symbols on the back of specific stop signs. This way, the buyers knew when and where to meet with the alleged suspects to buy the stolen material. What type of steganography did these two suspects use?
Options
- AText semagram
- BVisual semagram
- CGrill cipher
- DVisual cipher
How the community answered
(30 responses)- A3% (1)
- B83% (25)
- C3% (1)
- D10% (3)
Explanation
A semagram is a form of steganography that hides a message within something other than text. A visual semagram uses images, objects, or physical markings - rather than written words - to convey a hidden message. Writing symbols on the back of stop signs is a classic example: the symbols are visible objects in the physical world used to transmit covert information. A text semagram hides messages within the structure of written text. A grill cipher uses a physical cutout mask over a text. A 'visual cipher' is not a standard steganography classification.
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