Hiding Inside HTML and Other Source Codes
Hameed Al_Qaheri, Sandipan Dey, Sugata Sanyal

TL;DR
This paper introduces a novel steganographic method for hiding secret messages within HTML and source code by exploiting case insensitivity and minimal code modifications, making the hidden data imperceptible.
Contribution
It proposes a new data hiding technique in HTML and source codes that leverages case redundancy and minimal code changes to embed secret messages without detection.
Findings
Data can be hidden without affecting webpage appearance.
The technique is extendable to any case-insensitive programming language.
Minimal, almost imperceptible modifications are made in case-sensitive languages.
Abstract
Many steganographic techniques were proposed for hiding secret message inside images, the simplest of them being the LSB data hiding. In this paper, we suggest a novel data hiding technique in an HTML Web page and also propose some simple techniques to extend the embedding technique to source codes written in any programming language (both case insensitive like HTML, Pascal and case sensitive languages like C, C++, Java). We basically try to exploit the case-redundancy in case-insensitive language, while we try hiding data with minimal changes in the source code (almost not raising suspicion). HTML Tags are case insensitive and hence an alphabet in lowercase and one in uppercase present inside an HTML tag are interpreted in the same manner by the browser, i.e., change in case in a web page is imperceptible to the browser. We first exploit this redundancy and use it to embed secret data…
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Taxonomy
TopicsAdvanced Steganography and Watermarking Techniques · Advanced Malware Detection Techniques · Digital Rights Management and Security
