  With an enormous range of applications, Internet of Things (IoT) has
magnetized industries and academicians from everywhere. IoT facilitates
operations through ubiquitous connectivity by providing Internet access to all
the devices with computing capabilities. With the evolution of wireless
infrastructure, the focus from simple IoT has been shifted to smart, connected
and mobile IoT (M-IoT) devices and platforms, which can enable low-complexity,
low-cost and efficient computing through sensors, machines, and even
crowdsourcing. All these devices can be grouped under a common term of M-IoT.
Even though the positive impact on applications has been tremendous, security,
privacy and trust are still the major concerns for such networks and an
insufficient enforcement of these requirements introduces non-negligible
threats to M-IoT devices and platforms. Thus, it is important to understand the
range of solutions which are available for providing a secure,
privacy-compliant, and trustworthy mechanism for M-IoT. There is no direct
survey available, which focuses on security, privacy, trust, secure protocols,
physical layer security and handover protections in M-IoT. This paper covers
such requisites and presents comparisons of state-the-art solutions for IoT
which are applicable to security, privacy, and trust in smart and connected
M-IoT networks. Apart from these, various challenges, applications, advantages,
technologies, standards, open issues, and roadmap for security, privacy and
trust are also discussed in this paper.
