TREND introduces an innovative steganography technique that hides information in text documents by replacing standard whitespace characters with visually identical alternatives.

• Embeds byte-encoded sequences without changing text appearance or semantics
• Works with pure, unformatted text where other methods fail
• Enables authentication of human vs LLM-generated content
• Provides security applications through hidden watermarking

This research offers critical tools for digital forensics and content verification in an era where distinguishing between human and AI-generated text has become increasingly difficult, with significant implications for combating misinformation and protecting intellectual property.

TREND: A Whitespace Replacement Information Hiding Method