Table 1.

Overview of related work.

Publication	Published	Summary
Noor et al. [5]	2019	A comprehensive overview of authentication and authorization research for years between 2016 and 2018.
Trnka et al. [6]	2018	Mapping study for authentication and authorization articles from 2012 to 2017.
Chanal et al. [8]	2020	Survey providing an overview of architectures, privacy and research challenges, and differences of solutions between domains.
Milovlaskaya et al. [7]	2019	Great overview of IoT back-end security issues, general hardware, and application security, along with a summary of IoT security management and security standards.
Al-Naji et al. [9]	2020	Focused survey on continuous authentication methods.
Tange et al. [10]	2020	Focused survey on industrial IoT security issues.