Prof. Ioanna Dionysiou
Department of Computer Science, School of Sciences and Engineering, University of Nicosia, Nicosia, Cyprus
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Academic Career Length
22Years (2005-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 January 2008 in International Journal of Critical Infrastructures
Journal Article
CHCarl H. Hauser
Carl H. Hauser
DBDavid E. Bakken
David E. Bakken
Ioanna DionysiouHGHarald Gjermundrød
Harald GjermundrødVIVenkata S. Irava
Venkata S. Irava
ABAnjan Bose
Anjan Bose
+1
The present communication architecture supporting control of the electric power grid makes it difficult to use the wealth of data collected at high rates in substations, retarding their use in new applications for controlling the grid. A flexible, real-time data network would make it possible to use these data for many more control and protection applications, potentially increasing the grid's reliability and increasing its operating efficiency. Applications that could use these data include: decentralised load frequency control; closed-loop voltage control; transient and small-signal stabilisation; and special protection schemes using data gathered over a wide area. Such applications and the flexibility of the underlying communication network imply greater data sharing between utilities, leading to new performance, availability and reliability requirements. This paper examines the security, trust and Quality of Service (QoS) requirements imposed by these applications and shows how they are met by mechanisms included in the GridStat middleware framework that we are developing.
5 October 2016
Book Chapter
HGHarald Gjermundrød
Harald GjermundrødIoanna DionysiouKCKyriakos Costa
Kyriakos Costa
10 December 2019
Book Chapter
MVMichel B. Verwer
Michel B. Verwer
Ioanna DionysiouHGHarald Gjermundrød
Harald Gjermundrød10 November 2016
Conference Paper
HGHarald Gjermundrød
Harald GjermundrødKCKonstantinos Chalkias
Konstantinos Chalkias
Ioanna DionysiouThe blockchain technology has emerged as a disruptive technology in recent years. The open and transparent nature of the distributed ledger, as supported by the blockchain technology, is an appealing factor to push this technology in applications with strong accountability and audit requirements such as cryptocurrency systems (i.e. Bitcoin) and ecommerce (i.e OpenBazaar). In order to guarantee the integrity of the distributed ledger, a set of miner nodes is in place that uses computing power to prove the authenticity of the ledger, in exchange for a small compensation fee. In this paper, alternative reward schemes for the miners are presented.
1 January 2015 in Electronic Government, an International Journal
Journal Article
HGHarald Gjermundrød
Harald GjermundrødIoanna DionysiouGovernments are looking for ways to exploit the advances in ICT to transform the public sector in terms of effective governance, transparency, citizen participation, and policymaking. The eGovernment implementation is faced with challenges, which are administrative, societal, technological, and legal concerns, to just name a few. One important challenge is that the citizens must be able to trust the eGovernment during electronic transactions. This entails that the information communicated between the public and the government is not only protected against security attacks, but is also protected against privacy threats. Privacy protection must be integrated in the eGovernment platform to ensure an acceptable level of trust among all participating parties. This paper presents a conceptual framework of a configurable privacy-awareness system that supports citizen participation whenever government officials access personal data.
About Me
Prof Ioanna Dionysiou is a Professor of Computer Science at University of Nicosia. She is currently the Associate Head of the Department of Computer Science and the co-director of the Informatics Security Laboratory. Dionysiou received her PhD from Washington State University (2006) and during her graduate studies she held teaching and research assistant appointments. Her PhD dissertation work was supported by NIST, NSF and DOE. Dionysiou’s research focuses on active defenses, privacy, applied security standards, multidisciplinary security practices, and cybercrime. She has an active publication record, active involvement in numerous conferences (program chair, session chair, program com-mittee member) and editorial experience as a book editor. She has participated in locally-funded and EU-funded research projects. Dionysiou is a member of several professional associations (IEEE, IEEE Women in Engineering, ACM Senior Member, ACM-W) and serves in various academic and advisory boards, including the European Security Defense College EAB.Cyber Group and the Cyprus ECSC (European Cyber Security Challenge) Advisory Board.