Which type is used to hide messages in ASCII text by adding whitespaces at the end of lines?

Which type is used to hide messages in ASCII text by adding whitespaces at the end of lines?

• A. Video Steganography
• B. Folder Steganography
• C. Whitespace Steganography
• D. Document Steganography

Answer: (C)

Hiding data in ASCII text by adding whitespace at the end of lines is whitespace steganography. Since spaces and tabs at line ends aren’t visible in normal viewing, they can secretly carry bits of information. The hidden message is encoded by mapping trailing whitespace patterns to binary values (for example, a space might represent 0 and a tab 1, or different patterns encode longer sequences). Read the file line by line, detect the trailing whitespace, convert it back to bits, and reconstruct the message. This method is low-bandwidth and easy to miss, but it’s fragile because many editors and processes trim trailing whitespace, which can destroy the hidden data. It’s distinct from hiding data in video, folders, or document content, which use different carriers.

Hiding data in ASCII text by adding whitespace at the end of lines is whitespace steganography. Since spaces and tabs at line ends aren’t visible in normal viewing, they can secretly carry bits of information. The hidden message is encoded by mapping trailing whitespace patterns to binary values (for example, a space might represent 0 and a tab 1, or different patterns encode longer sequences). Read the file line by line, detect the trailing whitespace, convert it back to bits, and reconstruct the message. This method is low-bandwidth and easy to miss, but it’s fragile because many editors and processes trim trailing whitespace, which can destroy the hidden data. It’s distinct from hiding data in video, folders, or document content, which use different carriers.