Θάνου Όλγα

Περίληψη:
Abstract — The research of legal issues concerning the cyberspace is complex because it requires not only legal but also technical knowledge. The present paper examines the challenges and answers stemming from three main research questions: a) are there gaps in legislation concerning cyberbullying? b) Does the penal legislator consider security in cyberspace as a legal asset? c) How is cyberbullying treated in the legal system? By taking into account the existing legal and social dimensions of the issue, and triggered by those three research questions, we conclude that the creation of a global framework of internet behavior rules, internet legislation and communication security policies is absolutely necessary. Keywords — Cyberbullying, Legislation, Communication Security.

Περίληψη:
Abstract —The present study carries out a literature review on the topic of Continuous Authentication (CA) using behavioral biometrics. CA systems have been proposed in order to solve the shortcomings of other user authentication methods. CA processes are considered to raise systems security and reliability, and biometric technologies have increasingly become part of security architectures. Since some of uni-biometrics' vulnerabilities have already been revealed, they have been replaced or enhanced by multi-biometrics where behavioral biometrics are gaining ground as a new way of establishing the identity of a user. We therefore present a collection of selected published sources relevant to this topic accompanied by annotation, critical analysis of contents and, in some cases apposition of the main conclusions of each work. This work can help new researchers, scientists and the industry develop new systems and technologies by providing them a ready to use literature base with theoretical and practical aspects on Continuous Authentication using behavioral biometrics. Keywords — Literature Review Mobile Phones, Privacy Risk, Behavioral Biometrics, Continuous Authentication.

Περίληψη:
Smartphones are the most popular personal electronic devices. They are used for all sorts of purposes, from managing bank accounts to playing games. As smartphone apps and services proliferate, the amount of sensitive data stored on or processed by handheld devices rise as well. This practice entails risks, such as violating users’ privacy, stealing users’ identities, etc. Particularly, stealing an unlocked device grants full access to sensitive data and applications. In this survey, we examine whether users adopt some basic practices to protect their sensitive personal data themselves, or is there a need to further strengthen their protection? Our statistical analysis assesses smartphone users’ security attitudes and practices among different age groups. Finally, we investigate the factors that affect the attitude of users with respect to their practices for the protection of personal data.The results of this study, show that while many smartphone users do take some security precautions, a high percentage (24%) of them still ignores security and privacy risks. In addition, 19,1 % of users do not follow any practices to protect their PINs and Passwords.\r\nKeywords: Mobile Phones, Privacy Risk, Users Attitudes, Survey.

Περίληψη:
Abstract — Mobile phones are one of the most popular means of access to the internet. Users, via the telephone, connect to different services such as: Google, social networks, work accounts, banks accounts, etc. Those services, are many times, left open in their device. This enables risks, such as, loss or/and the violation of their personal data. In addition, in case of device theft after login, full access to sensitive data and applications may be fully granted. The purpose of this research is to analyze the most salient patterns characterizing user practices regarding certain behavioral modalities including: the way of using the various applications, power consumption, touch gestures and guest users’ habits. To this end, we used an original questionnaire, created for the needs of the specific survey, to examine whether we can find some trends among the users. This can give us a qualitative information, for the different behaviors / “characters” of users, in order to be used in further research regarding User’s Continuous Authentication. Keywords — Mobile Phones, Behavioral Modalities, Continuous Authentication, Survey.