Securing Constrained Networks through Zero Trust Architecture

In this era of digital transformation, the rapid multiplication of interconnected devices has profoundly expanded the landscape of cyber threat. New security challenges are a daily priority on the agenda, especially in constrained networks where the traditional security architecture has proven to be insufficient per design. The rise of the Internet of Things (IoT) added an additional burden to the already weak security infrastructure. This drew attention to the need for new frameworks that aim to contain the attack surface that, after the advent of these interconnected smart technologies, expanded without control. This dissertation explores the Zero Trust Architecture (ZTA) as a shift toward robust protection in embedded devices, resulting in a safeguard of the overall security posture and exposure in networks. Although this shift allowed the evolution of legacy security approaches and principles, it does not completely discard them. Eliminates fundamental weaknesses to the detriment of the implicit trust that the IoT has aggressively assumed.