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Georgios Portokalidis
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Georgios Portokalidis is Assistant Professor of Computer Science at Stevens
Institute of Technology. Before that he was a postdoctoral researcher at
Columbia University. He obtained his doctorate degree from Vrije
Universiteit in Amsterdam in 2010, as well as a Master of
Science in Core Systems from Leiden University in the Netherlands, and a
Bachelor of Science in Computer Science from the University of Crete in
Greece. His research interests revolve mainly around systems security, but
extend to other areas of systems like operating systems (OSes) and
networking. In the past, he has worked on various subjects including
distributed peer-to-peer systems like Gnutella, the open kernel environment
(OKE), which allows non-privileged users to load native code in the Linux
kernel, and fairly-fast packet filters (FFPF) for high-performance network
monitoring. During his PhD, his work focused on using information flow
tracking to detect and prevent zero-day attacks. This included the
development of the Argos emulator for high-interaction honeypots, which has
enabled many other works from researchers around the world. Follow-up works
aimed to bring security methods from the server world, to desktops and
smartphones. More recently, he has been involved with improving software
reliability and availability, by retrofitting binary software with defenses
against control-flow hijacking attacks and self-healing capabilities. He has
also done work on improving user authentication by using collaboration between
services to allow them to defend against password cracking and
theft. He is also interested in the privacy issues that arise from sharing
data within mobile devices, between them, and with the cloud, as well as the
effectiveness of anonymization platforms like Tor
against eavesdroppers. His latest works have been in offensive research,
where the perceived security of recent cutting edge defenses like
control-flow integrity (CFI) and kBouncer was tested. A complete CV can be foundat http://www.cs.stevens.edu/~gportoka/files/cv.pdf.
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Where do you work?Stevens Institute of Technology