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Pythia: A Privacy-enhanced Personalized Contextual Suggestion System for Tourism
(COMPSAC, 2015-07)
We present Pythia, a privacy-enhanced non-invasive contextual suggestion system for tourists, with important architectural innovations. The system offers high quality personalized recommendations, non-invasive operation ...
Communicating Personalized Risk Factors for Lifestyle Coaching
(2018)
Chronic non-communicable diseases such as diabetes, chronic cardiorenal and respiratory disease and cancer, are serious, burdensome and costly conditions that share a common characteristic: they heavily depend on common ...
Towards Privacy by Design in Personal e-Health Systems
(SCITEPRESS - Science and Technology Publications, Lda, 2016)
Personal e-health systems are the next generation of e-health applications and their goal is to assist patientsin managing their disease and to help both patients and healthy people maintain behaviours that ...
Deriving the Political Affinity of Twitter Users from Their Followers
(IEEE, 2018)
In this work, we show that Twitter users can reveal valuable political information about particular Nodes of Interest (NOIs) they opt to follow. More precisely, we utilize an interesting graph projection method and a series ...
How much does a zero-permission Android app know about us?
(2019-11)
Android devices contain a vast amount of personal data of their owners. These data are stored on the device and are protected by the Android permission scheme. Android apps can obtain access to specific data items by ...
Privacy Leakages about Political Beliefs through Analysis of Twitter Followers
(Pan-Hellenic Conference on Informatics, 2018-11)
In this paper, we focus on privacy leakages about Twitter usersand show that simply establishing follower and friend connectionsin the Twitter network might be enough to reveal sensitive in-formation about the political ...
Enhancing Deniability against Query-Logs
(Springer, 2011)
We propose a method for search privacy on the Internet, focusing onenhancing plausible deniability against search engine query-logs. The method ap-proximates the target search results, without submitting the intended query ...
A privacy-preserving cloud computing system for creating participatory noise maps
(IEEE, 2012)
Participatory sensing is a crowd-sourcing technique which relies both on active contribution of citizens and on their location and mobility patterns. As such, it is particularly vulnerable to privacy concerns, which may ...
Privacy-Preserving Television Audience Measurement Using Smart TVs
(2012)
Internet-enabled television systems, often referred to as Smart TVs, are a new development in television and home entertainment technologies. In this work, we propose a new, privacy-preserving, approach for Television ...
Quantum: Ένα Δίκτυο Ομότιμων Κόμβων για Κατανεμημένους Υπολογισμούς με Ενισχυμένη Ιδιωτικότητα
(3ο Πανελλήνιο Επιστημονικό Φοιτητικό Συνέδριο Πληροφορικής "ΦΟΙΤΗΤΙΚΟ ΕΥΡΗΚΑ", 2009-09)
In this paper, a new platform, called Quantum, for distributed computations among independent agents, is presented. Quantum is capable to operate on infrastructures that are formed by massive numbers of agents communicating ...