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Cooperation and Free Riding in Cyber Security Information-Sharing Programs
Abstract
Even with substantial investment in cyber defense, the risk of harm from cyber attacks is significant for many organizations. Multi-organization information-sharing programs have the potential to improve cyber security at relatively low cost by allowing organizations that face similar threats to share information on vulnerabilities, attacks, and defense strategies. The dynamics of an information-sharing program are likely to depend heavily on interactions between human decision makers. This article describes a system dynamics model of an information-sharing program. The model incorporates decision-making strategies of managers and cyber defenders in each participating organization. The model was used to assess how free-riding behavior is likely to affect the success of a multi-organization information-sharing program. Results shows that free riding may make information sharing more volatile and less beneficial early on, but other factors, including cost savings and the perceived utility of shared information, are likely to create success later in the time horizon.
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