AudioMorse: A Morse-based Covert Channel That Leverages Audio Streaming Platforms

In recent years, the significance of secure data transmission has been underscored, particularly within governmental sectors. Consequently, there has been a growing emphasis on the field of covert communication, which prioritizes the security and privacy of data transmission channels [1]. This has spurred advancements and research in the domain, leading to the development of many techniques. One area of interest pertains to covert channels that leverage social media as a medium for data transfer. In this study, we conducted a comprehensive review of existing literature on covert communications via social media and assessed the strengths and weaknesses of the reviewed papers concerning detection, bandwidth, latency, and ease of implementation. Subsequently, we propose a novel encoding technique, AudioMorse, predicated on Morse code and ASCII code, which utilizes the duration of a designated song track to generate concealed messages.