A Systematic Approach for Cybersecurity Design of In-Vehicle Network Systems with Trade-Off Considerations

Table 3

List of definitions and mappings of confusing concepts.

Term	Definition	Source	Mapping
Safety	The state of a system that does not cause harm to life, property, or the environment	SAE J3061 [10]	Ax, Bx, Cx (x = 1, 2, 3)
Functional safety	The absence of unreasonable risk due to hazards caused by malfunctioning behaviors of E/E system	ISO 26262 [37]	Part of A1
SOTIF	The absence of unreasonable risk due to hazards resulting from functional insufficiencies of the intended functionality or reasonably foreseeable misuse by the person	ISO/PAS 21448 : 2019 [2]	Part of (A1, A2, A3)
Operational safety	The combination of functional safety, safety of the intended functionality, and safety in use	A research article [38]	A1, A2, part of A3
Security	Security requirements are identified based on four types of possible security breaches, which are safety, financial, privacy, and operational	EVITA project [11]	Ax, Bx (x = 4.1)
Cybersecurity	The state of a system that does not allow exploitation of vulnerabilities to lead to losses, such as financial, operational, privacy, or safety losses	SAE J3061 [10]	Ax, Bx, Cx (x = 4.1)