Wireless Body Area Networks (WBANs) are vulnerable to cyberattacks and security breaches that could unlock the door for cybercriminals to penetrate hospital networks. This book covers the fundamental concepts of security and privacy in WBANs including security requirements, issues, and challenges. Security, Privacy, and Trust in WBANs and E-Healthcare highlights the taxonomy of threats and attacks in WBANs and Internet of Medical Things (IoMT) and presents all technical aspects related to the security and privacy of WBANs. In addition to outlining viable solutions that take into account constrained resources at WBAN end-devices, hybrid network architecture, application characteristics, and communication protocols, the book covers the core concepts of WBAN security, privacy, and trust. It describes both theoretical and practical aspects for those working in security in the WBAN and IoMT, emphasizing the most significant potential WBAN security issues and challenges. The book also covers intrusion detection and security risk assessments in WBANs as well as lightweight security solutions for WBANs, blockchain-based solutions for WBANs, and authentication and access control in WBANs through various applications and case studies. This book is highly relevant to the graduate/postgraduate students, academicians, security system designers, security analysts, computer scientists, engineers, researchers, digital forensic experts, and other personnel working in information security, IoMT, and WBAN.