Implementing Covert Channels to Transfer Hidden Information Over Whatsapp on Mobile Phones

Covert channels may be used to ensure protection of information during legal transfers, as well as for illegal and secret transfer of official and commercial secrets, confidential and individual data, and state secret with the purpose of sharing necessary information to commit a crime. Therefore, the problem of transferring hidden information to create covert channels over WhatsApp has been studied in the article, and the possibilities of using different graphic file formats, as well as using existing stenographic software developed for Windows and Android operating systems have been investigated.