Cybersecurity can be simply defined as the practice to safeguard or defend the use of cyberspace from digital attacks. In the Internet of Everything era, cybersecurity is particularly demanding and multifaceted because, among others, the number and variety of networked devices has dramatically increased, attackers are becoming more ingenious, and the attack tools are becoming increasingly ubiquitous, low-cost, and user friendly. Even more, unforeseen sudden events like the COVID-19 pandemic have shown that the speedy, unpremeditated digitization in vital sectors, including retail, education, and healthcare, comes at a cost—that is, an increased risk and impact of cyberattacks. In this context, the Feature Issue “Feature Papers for Future Internet—Cybersecurity Section” aims to fuel research and ease the dissemination of state-of-the-art technologies, solutions, case studies, and prototypes regarding all aspects of cybersecurity, either human- or technology-oriented. The submitted articles can be either applied, theoretical, or review, and interdisciplinary manuscripts are especially welcome.