You are presented with multiple paper abstracts, alongside the associated literature review and chapter titles. Given the provided information, you are going to do a literature review. Please generate a coherent literature review that synthesizes the content, draws connections between different works, highlights major findings, and identifies any gaps in the existing research.

Literature Review Title: Cloud-Assisted IoT-Based SCADA Systems Security: A Review of the State of the Art and Future Challenges 
Chapter Title:  6) RISK MANAGEMENT 
1. Abstract of Cited Paper (BIB001):  Contemporary industrial control systems no longer operate in isolation, but use other networks (e.g., corporate networks and the Internet) to facilitate and improve business processes. The consequence of this development is the increased exposure to cyber threats. This paper surveys the latest methodologies and research for measuring and managing this risk. A dearth of industrial-control-system-specific security metrics has been identified as a barrier to implementing these methodologies. Consequently, an agenda for future research on industrial control system security metrics is outlined. The "functional assurance" concept is also introduced to deal with fail-safe and fail-secure industrial control system operations.

Literature Review:
Ongoing research on SCADA systems is presented by Nicholson et al. BIB001 , who emphasize that the threats and risks to SCADA systems are not completely addressed because of their integration with corporate networks, making them more vulnerable to cyberattacks. Identification of risk mitigation techniques is a positive contribution from BIB001 . Research challenges faced by SCADA systems in risk assessment are outlined in  and BIB002 .