Explorando Oportunidades Esteganográficas sobre o IEEE 802.15.4

• Autor(a) principal: Pereira, Magda Alexandra Oliveira
• Data de Publicação: 2022
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.22/22190
• topic: IoT; Steganography; IEEE 802.15.4; MAC; OMNeT++; Esteganografia

The advancements in information and communication technology in the past decades have been converging into a new communication paradigm in which everything is expected to be interconnected with the heightened pervasiveness and ubiquity of the Internet of Things (IoT). As these technologies mature, they are increasingly finding its way into more sensitive domains in which safety and cybersecurity are paramount. While the number of deployed IoT devices continues to increase annually, up to tens of billions of connected devices, IoT devices continue to present severe cybersecurity vulnerabilities, which are worsened by challenges such as scalability, and heterogeneity at different levels. Steganography is the practice of representing information in a cloaked fashion, in such manner that it is not evident to a computing or communications system. These are being used increasingly to support malware with stealthy behaviours, aiming at exfiltrating data or orchestrating nodes of a botnet in a cloaked fashion. Nevertheless, the attention to this problem regarding underlying and pervasive IoT protocols such as the IEEE 802.15.4 has been scarce. Therefore, in this thesis, we intend to explore different steganographic opportunities of the IEEE 802.15.4 protocol and to analyze their performance. This will enable a better understanding of the threat, and to open new pathways to further support the development of new mechanisms and add-ons, that can effectively contribute to improve the current state-of-art of IoT systems which rely on such, or similar underlying communication technologies.