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Security vulnerabilities are a concern in systems and software exposed via networked interfaces. Previous research has shown that only a minority of vulnerabilities can be emulated through software fault injection techniques. This paper aims to accurately emulate software security vulnerabilities. To this end, the paper provides a field-data study on the operators needed to emulate vulnerabilities...
Cloud computing is revolutionizing how organizations treat computing resources. The privileged virtual machine is a key component in systems that use virtualization, but poses a dependability risk for several reasons. The activation of residual software faults that exist in every software project is a real threat and can impact the correct operation of the entire virtualized system. To study this...
Security vulnerabilities in system software are a major concern, especially when the software is highly exposed. This paper studies whether it is possible to emulate security vulnerabilities through software fault injection by using well known emulation operators. Emulating security vulnerabilities in the C programming language, in a realistic way using field data, is an unanswered research question,...
Virtualization is essential in supporting today's information infrastructure, and in particular the Cloud Computing area. However, the move to a virtualized architecture implies the addition of a new single point of failure: the hypervisor. Attempts to characterize and compare the susceptibility of systems (including virtualized systems) are often limited to the study of failure modes and their probabilities...
Since the first performance benchmarks proposed more than 25 years ago, the concept of comparing/ranking computer systems or components has proven to be a powerful instrument to promote the improvement of specific computer or software features. Following this path, many benchmarking studies have extended the benchmarking model initially proposed for performance to address the comparison of different...
The work on performance benchmarking has started long ago. Ranging from simple benchmarks that target a very specific system or component to very complex benchmarks for complex infrastructures, performance benchmarks have contributed to improve successive generations of systems. However, the fact that nowadays most systems need to guarantee high availability and reliability shows that it is necessary...
Cloud infrastructures provide elastic computing resources to client organizations, enabling them to build online applications while avoiding the fixed costs associated to a complete IT infrastructure. However, such organizations are unlikely to fully trust the cloud for the most critical applications. Among other threats, soft errors are expected to increase with the shrinking geometries of transistors,...
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