From Internet of Things (IoT) technology, various intelligent devices have been developed and integrated into daily life. IoT technologies have achieved unprecedented success, both concerning scalability and applicable scenarios.

However, because of the open nature of internet connectivity, IoT presents a significant challenge for the security community; attackers can access critical vulnerabilities in a wide variety of IoT applications and devices to perform their malicious activities. As a consequence, IoT security is now becoming a major concern. Without a doubt, there is an immediate need to consider IoT-related attacks in terms of defensive security. This will help in the design of effective security mechanisms.

The aim of this Special Issue is to collate original research articles that emphasize cutting-edge research from both academia and industry. We welcome submissions particularly focussing on addressing security, trust, and privacy in IoT. Review articles discussing the current state of the art are also welcomed.

Potential topics include but are not limited to the following:

• Security architectures and protection mechanisms for IoT
• Threat detection/prevention methods in IoT
• Trust computation and analysis in IoT
• Risk identification and mitigation methods in IoT
• Emerging lightweight security algorithms and protocols
• Authentication methods in IoT
• Machine and deep learning for solving security in IoT
• Blockchain technologies in IoT
• Federated models for privacy and security of IoT services
• Big data analytics for heterogeneous IoT systems
• Novel architectures, concepts, and models in IoT security