Liability issues in software engineering: the use of formal methods to reduce legal uncertainties
Communications of the ACM
A formal framework for specifying and analyzing logs as electronic evidence
SBMF'10 Proceedings of the 13th Brazilian conference on Formal methods: foundations and applications
Formal methods as a link between software code and legal rules
SEFM'11 Proceedings of the 9th international conference on Software engineering and formal methods
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Establishing contractual liabilities in case of litigation is generally a delicate matter. It becomes even more challenging when IT systems are involved. At the core of the problem lies the issue of the evidence provided by the opposing parties. We believe that the means to constitute evidence that could be used in case of conflict should be considered from the onset of IT projects and be part of the requirements for the design of IT systems. This paper proposes criteria for acceptable log architectures depending on the features of the system and the potential claims between the parties. We establish properties guaranteed by acceptable architectures and illustrate our framework with a travel booking system.