Giorgos Kappes

PhD Candidate at Systems Research Group, UOI

Profile

I am a PhD candidate in the Department of Computer Science and Engineering at the University of Ioannina in Greece.

I am Georgios E. Kappes and I was born in Ioannina, Greece in 1987. I hold a MSc degree in Computer Systems and a BSc degree from the Department of Computer Science and Engineering, University of Ioannina, Greece. I have extensive experience in conducting research in computer systems. My research includes the design, development, and evaluation of system software for multi-tenant virtualization environments. I completed my MSc under the supervision of Prof. Stergios Anastasiadis. In our research we studied approaches for efficient and effective support of multitenancy in filesystems used by virtual machines.

Currently, I am a PhD candidate at the Systems Research Group (SRG) of the University of Ioannina. My research interests include operating systems, data storage, and systems security.
For more information about me, you can find my curriculum vitae here: in Greek, in English.
You can also check my github profile page for a list of open source projects that I've contributed on.

Research

My main research interests lie in the fields of operating systems, data storage, and systems security. However, I am interested in pretty much everything to do with computer systems. Following are some of the projects that I have worked on:

Efficient, effective, and secure multitenancy. Secure access control is a challenging problem that organizations face in collaborative virtual environments, which has prevented many of them from migrating critical data or applications into these environments. In our research we examined approaches for efficient and effective support of multitenancy in filesystems used by virtual machines. We developed a Linux-based prototype solution over Ceph and obtained encouraging experimental results about the scalability and low overhead of our design. (MSc Thesis. Supervisor: Stergios V. Anastasiadis)

Feeding a desktop search engine with right results. The existing desktop search systems use web-based technologies, which are not optimal for desktop environments. To address this problem, some advanced desktop search systems create virtual links between files using methods that can generate too many false connections between files and also lead to performance bottlenecks due to the file connections that they maintain in a graph structure. In order to feed the search engine with the right results we developed a prototype filter driver over Windows NTFS to record important access characteristics of the local files. (BSc Thesis. In collaboration with Eirini Micheli. Supervisor: Stergios V. Anastasiadis)

OFIDIA - Operational Fire Danger Prevention Platform The main objective of the project is to build a cross-border operational fire danger prevention infrastructure that advances the ability of regional stakeholders across Apulia and Ioannina Regions to detect and fight forest wildfires through more effective patrolling, environmental monitoring, weather modeling, fire danger forecasting and automated access to related historical data.
My assigned task was the design of storage models for climate-change data. In particular, the determination of models for storing and processing scientific data on multicore systems and virtual machines. I also contributed on the deployment and setup of the platform's infrasturcture. (Project website, public version of Online Precision Weather Forecast for N.W. Greece)

Publications and Talks

Following is a list of my recent publications and invited talks:

Journal Papers

  • Giorgos Kappes, Andromachi Hatzieleftheriou, Stergios V. Anastasiadis, Multitenant Access Control for Cloud-Aware Distributed Filesystems, IEEE Transactions on Dependable and Secure Computing (TDSC), 2017 (to appear), IEEE, PDF.

Conference Papers

  • Giorgos Kappes, Andromachi Hatzieleftheriou, Stergios V. Anastasiadis, Virtualization-aware Access Control for Multitenant Filesystems, IEEE International Conference on Massive Storage Systems and Technology (MSST), Santa Clara, CA, USA, June 2014. (Paper, Presentation).

Technical Reports

  • Giorgos Kappes, Andromachi Hatzieleftheriou, Stergios V. Anastasiadis, Dike: Virtualization-aware Access Control for Multitenant Filesystems. Technical Report DCS2013-1, Department of Computer Science, University of Ioannina, February 2013. (Paper).

Master's Thesis

  • Scalable Access Control for Secure Multi-Tenant Filesystems. Giorgos Kappes, thesis supervisor: Stergios V. Anastasiadis. Master Thesis, Department of Computer Science and Engineering, University of Ioannina, Greece, October 2013. (Text, Presentation).

Invited Talks

  • 15th TERENA TF-Storage Task Force Meeting, “Virtualization-aware Access Control for Multitenant Filesystems”, 22 September 2014. (Presentation).

Contact Me

Most likely you will find me at A34 office in the first floor of the department. If not, below is more information on how you can reach me.

I use GnuPG for email encryption and signing. I also use it to sign digital content that I create (such as code, documents, and my web pages). The ID of my personal GPG key is 0xD614E92E88507AE1. You can find the key on the SKS OpenPGP Public Key server and here: pubring, public key, fingerprint.
Pelase note that I have recently transitioned from an old GPG key (F47D5746). You can find the transition statement here. It is signed by both my old and new keys to validate the transition.
In case you would like to send me a confidential email, please use my key to secure it. Additionally, please sign the email with your signing key and provide me with your public key, so that I can verify your signature.

EMAIL
giorgos (at) giorgoskappes.com
gkappes (at) cs.uoi.gr
geokapp (at) gmail.com
PHONE
(+30) 2651008833
ADDRESS
Dep. of Computer Science and Engineering
University of Ioannina
Room A-34
45110 Ioannina, Greece