Cloud failure and cyber insurance: calibration of stress scenarios and diversification - Ensai, Ecole Nationale de la Statistique et de l'Analyse de l'Information
Preprints, Working Papers, ... Year : 2024

Cloud failure and cyber insurance: calibration of stress scenarios and diversification

Abstract

The expansion of the cyber insurance market is constantly under the threat of an accumulation event that would affect simultaneously a large number of policyholders. Very few experiences exist on such catastrophes, apart from worldwide cyber attacks like Wannacry and NotPetya in 2017 (in a context where cyber insurance coverage was lower). Nevertheless, the very nature of cyber risk makes the occurrence of such events plausible in the future. There is therefore a need for stress-testing in order to be sure that a portfolio can resist to such a crisis. In this perspective, the EIOPA recently published methodological guidelines specific to cyber. One of the most concerning scenarios is the potential vulnerability of a cloud outage catastrophe, that is the failure of a cloud provider whose solution is shared by a significant part of the portfolio. In the present work, we propose a way to model and calibrate such kind of cloud outage scenario. We also provide way to measure the level of diversification of a cyber insurance portfolio, and how this diversification may protect against such events. A by-product of our methodology is to provide guidelines to underwriters to help reduce the vulnerability of a portfolio to these cloud outage scenarios.
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Dates and versions

hal-04731704 , version 1 (11-10-2024)

Identifiers

  • HAL Id : hal-04731704 , version 1

Cite

Olivier Lopez, Daniel Nkameni. Cloud failure and cyber insurance: calibration of stress scenarios and diversification. 2024. ⟨hal-04731704⟩
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