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NeoStego is a steganography application developed and published by Nick Haghiri, currently available at version 1.3.1 across a release history of nine versions. The software is designed to hide data inside image and audio files and to apply invisible watermarks, placing it within the steganography and digital watermarking category of security and data-protection tools. NeoStego is a modernized fork of the well-known OpenStego project, building upon that foundation with updated techniques and a contemporary feature set. Its data-hiding capabilities include content-adaptive embedding based on the HILL+STC algorithm, as well as support for the SI-UNIWARD algorithm, both of which are established approaches for embedding information in cover media while minimizing detectable distortion. For watermarking, NeoStego implements a robust DWT-SVD method, enabling invisible marks to be embedded into files for purposes such as ownership assertion and content protection. The application provides a cross-platform user interface, allowing it to be used across different operating systems with a consistent experience. Typical use cases include concealing sensitive information within ordinary-looking image or audio files, embedding imperceptible watermarks into media for copyright or attribution purposes, and experimenting with modern steganographic embedding algorithms. By combining content-adaptive data hiding, robust watermarking, and an accessible graphical interface, NeoStego serves users who need practical steganography functionality in a maintained and modernized package derived from a recognized open-source lineage. Its nine released versions indicate ongoing development and refinement of the tool over time.
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