Print Email Facebook Twitter No One Drinks From the Firehose Title No One Drinks From the Firehose: How Organizations Filter and Prioritize Vulnerability Information Author de Smale, S. (TU Delft Organisation & Governance) van Dijk, Rik (NCSC-NL (National Cyber Security Centre of the Netherlands)) Bouwman, X.B. (TU Delft Organisation & Governance) van der Ham, Jeroen (NCSC-NL (National Cyber Security Centre of the Netherlands); University of Twente) van Eeten, M.J.G. (TU Delft Organisation & Governance) Date 2023 Abstract The number of published software vulnerabilities is increasing every year. How do organizations stay in control of their attack surface despite their limited staff resources? Prior work has analyzed the overall software vulnerability ecosystem as well as patching processes within organizations, but not how these two are connected. We investigate this missing link through semi-structured interviews with 22 organizations in critical infrastructure and government services. We analyse where in these organizations the responsibility is allocated to collect and triage information about software vulnerabilities, and find that none of our respondents is acquiring such information comprehensively, not even in a reduced and aggregated form like the National Vulnerability Database (NVD). This means that information on known vulnerabilities will be missed, even in critical infrastructure organizations. We observe that organizations apply implicit and explicit coping mechanisms to reduce their intake of vulnerability information, and identify three trade-offs in these strategies: independence, pro-activeness and formalization. Although our respondents’ behavior is in conflict with the widely accepted security advice to collect comprehensive vulnerability information about active systems, no respondents re- call having experienced a security incident that was associated with missing information on a known software vulnerability. This suggests that, given scarce resources, reducing the intake of vulnerability information by up to 95% can be considered a rational strategy. Our findings raise questions about the allocation of responsibility and accountability for finding vulnerable systems, as well as suggest changing expectations around collecting vulnerability information. To reference this document use: http://resolver.tudelft.nl/uuid:2b18580e-d12a-492b-8486-a1bb81dd8678 DOI https://doi.org/10.1109/SP46215.2023.10179447 Publisher IEEE Embargo date 2024-01-21 ISBN 978-1-6654-9336-9 Source Proceedings of the IEEE Symposium on Security and Privacy (SP 2023) Event 2023 IEEE Symposium on Security and Privacy (SP), 2023-05-22 → 2023-05-24, San Francisco, United States Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2023 S. de Smale, Rik van Dijk, X.B. Bouwman, Jeroen van der Ham, M.J.G. van Eeten Files PDF No_One_Drinks_From_the_Fi ... mation.pdf 997.99 KB Close viewer /islandora/object/uuid:2b18580e-d12a-492b-8486-a1bb81dd8678/datastream/OBJ/view