RT info:eu-repo/semantics/article T1 Security practices and insider threats in Spanish healthcare centers: a survey-based risk assessment A1 Herrera Montano, Isabel A1 Góngora Alonso, Susel A1 Sañudo García, Soledad A1 García Aranda, José Javier A1 Rodrígues, Joel J.P.C. A1 Torre Díez, Isabel de la K1 Cybersecurity K1 Healthcare K1 Insider threats K1 Information security K1 Survey K1 3304.13 Dispositivos de Transmisión de Datos AB Introduction: Insider threats pose a critical risk in healthcare environments, where Hospital Information Systems(HIS) manage sensitive patients data. Authorized users may intentionally or accidentally compromise dataconfidentiality, integrity, and availability. This study assessed information security practices from the perspec-tive of healthcare professionals in Spanish medical centers.Methods: A descriptive, analytical, cross-sectional study was conducted using a survey administered to 41healthcare professionals with access to confidential data. The survey covered access control, encryption at restand in transit, communication channels, and data usage control. Descriptive statistics, Chi-square tests, andCram´er’s V were applied to identify significant associations. K-means clustering and Silhouette coefficient wereused to define user profiles. Principal Component Analysis (PCA) was used to visualize behavior patterns. ARandom Forest model identified the most relevant predictive variables.Results: Critical security gaps were detected, 31.7 % reported no control over data usage. Only 29.3 % encrypteddata at rest and 36.6 % during transmission. Over 40 % used personal email or messaging apps to share sensitivedata, and 97.6 % relied solely on passwords for authentication. These practices are inadequate to mitigate insiderthreats.Conclusion: There is an urgent need to strengthen insider data protection. Security strategies should be tailored touser risk profiles. Measures must include strong authentication, full encryption, and stricter control of datatransmission to reduce exposure to insider threats (intentionally or unintentionally) in healthcare settings.Additionally, there is a need to promote continuous cybersecurity training. PB Elsevier SN 1386-5056 YR 2026 FD 2026 LK https://uvadoc.uva.es/handle/10324/79507 UL https://uvadoc.uva.es/handle/10324/79507 LA eng NO International Journal of Medical Informatics, 2025, vol. 205, p. 106107 NO Producción Científica DS UVaDOC RD 01-dic-2025