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arXiv · 2110.00362

Dynamics of targeted ransomware negotiation

Pierce Ryan·John Fokker·Sorcha Healy·Andreas Amann
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Abstract

In this paper, we consider how the development of targeted ransomware has affected the dynamics of ransomware negotiations to better understand how to respond to ransomware attacks. We construct a model of ransomware negotiations as an asymmetric non-cooperative two-player game. In particular, our model considers the investments that a malicious actor must make in order to conduct a successful targeted ransomware attack. We demonstrate how imperfect information is a crucial feature for replicating observed real-world behaviour. Furthermore, we present optimal strategies for both the malicious actor and the target, and demonstrate how imperfect information results in a non-trivial optimal strategy for the malicious actor.

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Pierce Ryan, John Fokker, Sorcha Healy, Andreas Amann. 2021-10-01. Dynamics of targeted ransomware negotiation. https://doi.org/10.1109/access.2022.3160748

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