Nozomi Networks Labs continues to aggregate industry trends and its own research in this semi-annual report covering the second half of 2021. Cybercrime continued to increase in the last six months of the year—ransomware and supply chain attacks dominated the headlines with the most impact and operational disruption. Despite renewed focus on the part of law enforcement, government bodies, and industry, the sophistication of the attack technology and risk to organizations continues to trend in the wrong direction. To help security teams and researchers of OT/IoT environments, this report focuses on three main areas: trends in attacks, vulnerability research, and best practices in remediation efforts and technology. Some of the key focus areas include a deeper dive into ransomware attacks and

Nozomi Networks’ own research into vulnerabilities in security cameras and software supply chains. We also cover attack surface reduction, the role of Zero Trust in modern OT/IoT networks, and techniques for analyzing device firmware for vulnerabilities.