4 research outputs found
Security and usability of a personalized user authentication paradigm : insights from a longitudinal study with three healthcare organizations
Funding information: This research has been partially supported by the EU Horizon 2020 Grant 826278 "Securing Medical Data in Smart Patient-Centric Healthcare Systems" (Serums) , and the Research and Innovation Foundation (Project DiversePass: COMPLEMENTARY/0916/0182).This paper proposes a user-adaptable and personalized authentication paradigm for healthcare organizations, which anticipates to seamlessly reflect patients’ episodic and autobiographical memories to graphical and textual passwords aiming to improve the security strength of user-selected passwords and provide a positive user experience. We report on a longitudinal study that spanned over three years in which three public European healthcare organizations participated in order to design and evaluate the aforementioned paradigm. Three studies were conducted (n=169) with different stakeholders: i) a verification study aiming to identify existing authentication practices of the three healthcare organizations with diverse stakeholders (n=9); ii) a patient-centric feasibility study during which users interacted with the proposed authentication system (n=68); and iii) a human guessing attack study focusing on vulnerabilities among people sharing common experiences within location-aware images used for graphical passwords (n=92). Results revealed that the suggested paradigm scored high with regards to users’ likeability, perceived security, usability and trust, but more importantly it assists the creation of more secure passwords. On the downside, the suggested paradigm introduces password guessing vulnerabilities by individuals sharing common experiences with the end-users. Findings are expected to scaffold the design of more patient-centric knowledge-based authentication mechanisms within nowadays dynamic computation realms.PostprintPeer reviewe
Security and usability of a personalized user authentication paradigm:insights from a longitudinal study with three healthcare organizations
This paper proposes a user-adaptable and personalized authentication paradigm for healthcare organizations, which anticipates to seamlessly reflect patients’ episodic and autobiographical memories to graphical and textual passwords aiming to improve the security strength of user-selected passwords and provide a positive user experience. We report on a longitudinal study that spanned over three years in which three public European healthcare organizations participated in order to design and evaluate the aforementioned paradigm. Three studies were conducted (n=169) with different stakeholders: i) a verification study aiming to identify existing authentication practices of the three healthcare organizations with diverse stakeholders (n=9); ii) a patient-centric feasibility study during which users interacted with the proposed authentication system (n=68); and iii) a human guessing attack study focusing on vulnerabilities among people sharing common experiences within location-aware images used for graphical passwords (n=92). Results revealed that the suggested paradigm scored high with regards to users’ likeability, perceived security, usability and trust, but more importantly it assists the creation of more secure passwords. On the downside, the suggested paradigm introduces password guessing vulnerabilities by individuals sharing common experiences with the end-users. Findings are expected to scaffold the design of more patient-centric knowledge-based authentication mechanisms within nowadays dynamic computation realms
Lioubimov
NommĂ© directeur artistique du Théâtre de la Taganka Ă Moscou en 1964, louri Lioubimov est l’un des metteurs en scène les plus significatifs des dĂ©cennies 60-70. L’histoire de la Taganka constitue alors Ă la fois un moment capital de l’histoire du théâtre et de la sociĂ©tĂ© russes et soviĂ©tiques, et un cas reprĂ©sentatif du théâtre de rĂ©sistance dans les pays communistes. La distance est aujourd’hui propice pour y revenir : ni trop près, ni trop loin encore de ce théâtre « effervescent » qui, au dĂ©but des annĂ©es 90, après les transformations Ă l’Est, perdit sa raison d’être, malgrĂ© le retour de son directeur, destituĂ© et exilĂ© en 1984. Les traces sont nombreuses et les tĂ©moins vivants, ce qui permet l’enquĂŞte avant l’analyse. L’enthousiasme s’est apaisĂ©, mais la formidable aventure théâtrale n’a pas sombrĂ© dans l’oubli ni dans les querelles intestines qui, en 1992, ont abouti Ă la division de la troupe en deux. La scène poĂ©tique et politique de Lioubimov permet d’aborder des problèmes esthĂ©tiques spĂ©cifiques : celui d’un théâtre « sans pièces », montage de textes en prose, classique ou contemporaine, celui de la mise en scène « mĂ©taphorique ». Mais dans la mesure oĂą sa pratique est dĂ©terminĂ©e par les rapports entretenus avec le pouvoir, l’idĂ©ologie, les instances de censure, la dissidence, et surtout par la relation essentielle, vitale, que la Taganka tisse avec son public, les questions artistiques se doublent toujours de questions touchant au fonctionneÂment de la sociĂ©tĂ© et Ă l’organisation politique. En URSS, la Taganka a Ă©tĂ© au cĹ“ur d’une problĂ©matique de la mĂ©moire. L’œuvre que louri Lioubimov a rĂ©alisĂ©e Ă la Taganka de 1964 Ă 1984, en rassemblant autour de lui une plĂ©iade de grands Ă©crivains et compositeurs, le scĂ©nographe David Boroski et une troupe unique oĂą jouait le chanteur-poète Vladimir Vyssotski, a reprĂ©sentĂ© un espace de libertĂ© authentique dans le contexte de la stagnation brejnĂ©vienne. Elle peut aussi constituer un instrument de rĂ©flexion pour la scène d’aujourd’hui