Which type hides messages in ASCII text by adding spaces at the end of lines?

Which type hides messages in ASCII text by adding spaces at the end of lines?

• A. Audio Steganography
• B. Document Steganography
• C. Web Steganography
• D. Whitespace Steganography

Answer: (D)

Hiding messages in ASCII text with trailing spaces relies on whitespace characters to carry the secret. By placing spaces (or tabs) at the end of lines, you encode binary data while the visible text remains unchanged. A reader who knows the encoding can read those trailing whitespace patterns to reconstruct the hidden message. This is a textbook example of whitespace steganography, where the concealment happens entirely in the invisible or non-printing characters of the text. It’s different from hiding data in audio (audio steganography), in documents (which might use formatting or metadata), or on the web (web steganography in HTML/CSS/HTTP content).

Hiding messages in ASCII text with trailing spaces relies on whitespace characters to carry the secret. By placing spaces (or tabs) at the end of lines, you encode binary data while the visible text remains unchanged. A reader who knows the encoding can read those trailing whitespace patterns to reconstruct the hidden message. This is a textbook example of whitespace steganography, where the concealment happens entirely in the invisible or non-printing characters of the text. It’s different from hiding data in audio (audio steganography), in documents (which might use formatting or metadata), or on the web (web steganography in HTML/CSS/HTTP content).