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With the continuous exposure of information technology vulnerabilities, security risks are increasing, and information is easy to use by malicious attackers, which can bring huge property and economic losses. The communication\u2010based train control (CBTC) system is the most important subsystem of urban rail transit. The CBTC system ensures safe and efficient operation of trains, so the quantitative assessment of cyber security is quite necessary. In this paper, a resilience\u2010based assessment method is proposed to analyze the security level of CBTC systems based on indicators of both the cyber domain and the physical domain. The proposed method can demonstrate the robustness and recovery ability of CBTC systems under different security attacks. Based on the structural information entropy, the fusion of different indicators is achieved. Two typical attacking scenarios are analyzed, and the simulation results illustrate the effectiveness of the proposed assessment approach.<\/jats:p>","DOI":"10.1155\/2021\/2175780","type":"journal-article","created":{"date-parts":[[2021,10,21]],"date-time":"2021-10-21T23:20:37Z","timestamp":1634858437000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["A Resilience\u2010Based Security Assessment Approach for CBTC Systems"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9866-3774","authenticated-orcid":false,"given":"Ruiming","family":"Lu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9604-4387","authenticated-orcid":false,"given":"Huiyu","family":"Dong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5713-3988","authenticated-orcid":false,"given":"Hongwei","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4973-676X","authenticated-orcid":false,"given":"Dongliang","family":"Cui","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3688-1658","authenticated-orcid":false,"given":"Li","family":"Zhu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4186-4935","authenticated-orcid":false,"given":"Xi","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,10,21]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.3390\/su11082351"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/mits.2018.2884492"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1109\/mvt.2009.934665"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.3390\/su11133586"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.3390\/su10124520"},{"key":"e_1_2_9_6_2","doi-asserted-by":"crossref","unstructured":"BuL. XieD. ChenX. WangL. andLiX. Demo abstract: bachol- modeling and verification of cyber-physical systems online Proceedings of the 2012 IEEE\/ACM Third International Conference on Cyber-Physical Systems April 2012 Washington DC; USA https:\/\/doi.org\/10.1109\/iccps.2012.43 2-s2.0-84861495285.","DOI":"10.1109\/ICCPS.2012.43"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/jsac.2012.120506"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.1109\/tits.2014.2377115"},{"key":"e_1_2_9_9_2","doi-asserted-by":"publisher","DOI":"10.1186\/s13638-017-0959-3"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.3390\/s19040818"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.5085397"},{"key":"e_1_2_9_12_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-14261-1_10"},{"key":"e_1_2_9_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s40864-017-0051-7"},{"key":"e_1_2_9_14_2","volume-title":"Railway Applications the Specification and Demonstration of Reliability, Availability, Maintainability and Safety (Rams)","author":"CENELEC E.","year":"1999"},{"key":"e_1_2_9_15_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10111-011-0187-2"},{"key":"e_1_2_9_16_2","volume-title":"Nipp 2013: Partnering for Critical Infrastructure Security and Resilience","author":"DHS U.","year":"2013"},{"key":"e_1_2_9_17_2","volume-title":"Hierarchical Architectures of Resilient Control Systems: Concepts, Metrics and Design Principles","author":"Zhu Q.","year":"2015"},{"key":"e_1_2_9_18_2","doi-asserted-by":"publisher","DOI":"10.1038\/srep26810"},{"key":"e_1_2_9_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ress.2013.07.004"}],"container-title":["Complexity"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/complexity\/2021\/2175780.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/complexity\/2021\/2175780.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/2021\/2175780","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,8,9]],"date-time":"2024-08-09T21:35:12Z","timestamp":1723239312000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1155\/2021\/2175780"}},"subtitle":[],"editor":[{"given":"Xuzhen","family":"Zhu","sequence":"additional","affiliation":[],"role":[{"role":"editor","vocabulary":"crossref"}]}],"short-title":[],"issued":{"date-parts":[[2021,1]]},"references-count":19,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,1]]}},"alternative-id":["10.1155\/2021\/2175780"],"URL":"https:\/\/doi.org\/10.1155\/2021\/2175780","archive":["Portico"],"relation":{},"ISSN":["1076-2787","1099-0526"],"issn-type":[{"value":"1076-2787","type":"print"},{"value":"1099-0526","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1]]},"assertion":[{"value":"2021-06-29","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-09-28","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-10-21","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"2175780"}}