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Computational systems need to be dependable, but they are vulnerable to defects, errors, failure and faults, and they affect their behaviour. Fault injection is one of the useful techniques that have been used to evaluate the behaviour of the system by intentionally introduced fault, so as to determine its effect on the system behaviour. There are many tools and techniques used to inject faults, categorized under software and hardware techniques. To keep pace with progress and development over time, developers need to be aware off tools and techniques according to their needs, when using either software or hardware. In this paper we make a survey for several tools and techniques which are mostly used these days. As we compare between them based on their basic functions, source need, how to inject faults and feedback about each one.
Salih et al. (Sat,) studied this question.