Fail-safe testing of safety-critical systems: a case study and efficiency analysis

2015 ◽  
Vol 26 (1) ◽  
pp. 3-48 ◽  
Author(s):  
Ahmed Gario ◽  
Anneliese Andrews ◽  
Seana Hagerman
Keyword(s):  
Efficiency Analysis ◽  
Critical Systems ◽  
Safety Critical ◽  
Safety Critical Systems ◽  
Fail Safe

How Do I Assess Our Cyber Risk?

2021 ◽  
pp. 41-57
Author(s):  
Gregory Falco ◽  
Eric Rosenbach
Keyword(s):  
Communication Networks ◽  
Impact Analysis ◽  
Critical Systems ◽  
Safety Critical ◽  
Safety Critical Systems ◽  
Mission Critical ◽  
Delivery Networks ◽  
Cyber Risk ◽  
Digital Assets

The question “How do I assess our cyber risk?” addresses how to identify and characterize cyber risk unique to an organization’s critical systems, networks, and data. The chapter begins with a case study about a cyberattack on Ukraine’s electric grid. It details risk assessment for three types of critical systems: mission-critical systems, business-critical systems, and safety-critical systems. It explains the three types of networks critical to many organizations: business and administrative networks, operational and service delivery networks, and communication networks. In outlining the “CIA triad,” it shows how cyber risk can be characterized as a confidentiality, integrity, or availability issue relating to digital assets. Further, it describes how to assess the importance of different digital assets and how to prioritize them using a business impact analysis (BIA). The chapter concludes with real-world Embedded Endurance strategy lessons Rosenbach gained in Saudi Arabia in the wake of one of the world’s most destructive cyberattacks.

scholarly journals An Approach for Building Security Resilience in AUTOSAR Based Safety Critical Systems

2017 ◽  
Author(s):  
Ahmad MK Nasser ◽  
Di Ma ◽  
Priya Muralidharan
Keyword(s):  
Great Success ◽  
Electronic Control ◽  
Critical Systems ◽  
Crucial Step ◽  
Safety Critical ◽  
Automotive Systems ◽  
Systems Security ◽  
Control Units ◽  
Safety Critical Systems ◽  
Fail Safe

AUTOSAR, a worldwide development partnership among automotive parties to establish an open and standardized software architecture for electronic control units (ECUs), has seen great success in recent years by being widely adopted in deeply embedded automotive ECUs. Increasing the security resilience of AUTOSAR based systems is a crucial step in securing safety critical automotive systems. We study AUTOSAR safety mechanisms and demonstrate how they can be used as attack vectors to degrade the vehicle safety.We show the need to harmonize the fail-safe response with the secure state of the system. And we evaluate the overlap in the properties of safety mechanisms with security objectives to highlight methods for hardening automotive systems security.  

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