Welcome! My name is Daniel Lerch, and this site is dedicated to steganography and steganalysis: the study of hiding information and detecting its presence.

Image A: peppers Cover image
Image B: peppers containing hidden data Stego image

The images above look identical, but one contains hidden information. This illustrates the central problem behind image steganography and steganalysis: how to conceal information without revealing its presence, and how to detect the traces it may leave behind.

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StegoRank

Tracks the current state of image steganography techniques and tools, with a particular focus on how detectable they are under practical steganalysis.

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StegoLab

Research implementations and practical tools for steganography, steganalysis and watermarking. It includes Aletheia, an open source tool for detecting hidden messages in images, and HStego, a tool for hiding data in bitmap and JPEG images.

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Publications

My research papers, preprints and related materials on steganography, steganalysis, watermarking and information security.

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