ABSTRACT
This chapter analyzes the risks of Internet of things (IoT)-based ambient assisted living (AAL) applications, focusing on the elements that need to be protected, the types of attacks that can be launched by malicious attackers, and how such attacks may be mitigated. Additionally, a proposal for a distributed framework for improving the trustworthiness of IoT-based AAL systems using blockchain technology is presented. AAL systems need to have strong security and trust systems, which should also be at the same time dynamic and adaptive to the context of the situations. ACTIVAGE proposes that AAL systems require inherent security, trustworthiness, and privacy by design. A modular framework will provide placeholders for incorporating security and privacy preserving algorithms, along with protocols ensuring that only trusted entities can become part of the deployment. The use of blockchain can provide solutions to many security- and trust-related aspects of the IoT due to the inherent distributed nature and trust assurance.
