On the functional relation between security and dependability impairments
Erland Jonsson, Lars Strömberg, Stefan Lindskog · 1999
Problems related to security and dependability/ reliability are still treated separately in many contexts.It has been shown that there is a considerable conceptual overlap, however, and an integrated framework to the two disciplines has already been suggested.This paper shows that there is also a conceptual overlap of impairments from these areas and suggests an integrated approach that clarifies the functional relation between these, both from dependability and security viewpoints.The overall objective is to arrive at a general and clear-cut framework that would describe how trustable (dependable, secure) a system is, regardless of the reason for its not being totally trustable.For example, it should be possible to treat a system failure caused by an intentional intrusion or a hardware fault using the same methodology.A few examples from real-world situations are given to support the suggested approach.