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CAS-002 · Question #302
CAS-002 Question #302: Real Exam Question with Answer & Explanation
The correct answer is A: Digital watermarking. Digital watermarking embeds unique, hidden identifiers into documents so that if a copy is leaked, the watermark reveals which recipient's copy was the source.
Question
A security consultant is investigating acts of corporate espionage within an organization. Each time the organization releases confidential information to high-ranking engineers, the information is soon leaked to competing companies. Which of the following techniques should the consultant use to discover the source of the information leaks?
Options
- ADigital watermarking
- BSteganography
- CEnforce non-disclosure agreements
- DDigital rights management
Explanation
Digital watermarking embeds unique, hidden identifiers into documents so that if a copy is leaked, the watermark reveals which recipient's copy was the source.
Common mistakes.
- B. Steganography conceals secret messages inside other data for covert communication, but it does not embed traceable identifiers that identify which recipient leaked a document.
- C. NDAs are a legal deterrent and contractual obligation, but they do not provide a technical mechanism to identify which individual is responsible for an active leak.
- D. Digital rights management controls access and usage permissions for content, but it does not create unique per-recipient markers that can forensically trace a leaked copy back to its source.
Concept tested. Digital watermarking for leak source attribution
Reference. https://www.nist.gov/system/files/documents/2017/05/09/NIST.SP.800-188.pdf
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