Blockchain has been proposed as a viable technology to enhance efficiency, decrease costs, and eliminate security and privacy issues, due to its capacity to provide trusted data exchange and processing environments in wireless networks. As a result, it is worthwhile to investigate scalable and flexible integrated multi-level security in wireless networks using blockchain, taking into account both the physical layer and higher levels. In recent years, however, the rapid development of blockchain has made it possible to connect a huge number of mobile devices to one another over a wireless network. As a result, existing wireless networks are becoming increasingly complicated and widespread, posing new security dangers and new technological problems. As hundreds of attack routes for mobile devices have been identified, security and privacy issues have become impediments to further deployments and applications in wireless networks.

The characterization of privacy and security in blockchain-based wireless networks is an increasingly important subject. Modern wireless communication technologies are vulnerable to a variety of security risks, while traditional security procedures, such as encryption and protocol design, are becoming increasingly ineffective at ensuring reliability and safety in today's wireless networks. In wireless networks and mobility contexts, a great deal of effort has been put into ensuring privacy and security. Aside from several encryption and security methods, there has been significant progress in implementing industry standards, like giving individuals authority over their own security operations. These approaches and rules are intended to prevent the unauthorized disclosure of secure communication to some extent, although they may be ineffective for secure wireless transfers at all times. In light of this, developing viable blockchain ideas for efficient and secure transactions in modern wireless networks has emerged as an urgent research subject in both academia and industry.

The aim of this Special Issue is to provide a useful and timely venue for the discussion of the most recent achievements in this field. Our main goal is to gather high-quality contributions on blockchain integration and wireless networks to ensure effective communication standards in wireless sensor networks and mobile environments. Additionally, we welcome work intending to research and build blockchain-based advanced secure computing mechanisms, as well as new technologies and solutions to solve security and privacy challenges in blockchain-based wireless networks and mobile settings.

Potential topics include but are not limited to the following:

• Wireless sensor network (WSN) blockchain architectures and protocols
• Blockchain-enabled distributed systems for mobile environments
• New challenges for blockchain in wireless sensor networks
• Vulnerability assessment and prediction in WSN.
• Blockchain-based intrusion detection in WSN and mobile networks
• Fast routing and safe access control in blockchain
• Mobile device access on the blockchain.
• Digital forensics and blockchain in wireless communications
• Blockchain-based mobile application development
• End-user privacy with blockchain in mobile networks
• Biometric security and privacy enhanced by blockchain
• Blockchain-based wireless networks requiring high-level encryption mechanisms