I am a final-year DPhil student in Cyber Security at the University of Oxford, funded by the Clarendon Fund, the EPSRC, Kellogg College, and the CDT in Cyber Security. My dissertation, "Leaky Hardware: Modeling and Exploiting Imperfections in Embedded Devices", is supervised by Prof. Kasper Rasmussen. I spent the first half of 2019 as a "Visiting Assistant in Research (VAR)" at the Computer Architecture and Security Lab of Yale University, where I investigated cloud FPGA covert- and side-channel attacks under Prof. Jakub Szefer.
In 2014, I received an MPhil in Advanced Computer Science with Distinction from the University of Cambridge, where I was the Goulandris Scholar at Magdalene College. Dr. Eiko Yoneki supervised my "Distributed Massive Graph Triangulation" research project.
A year earlier, I graduated Summa Cum Laude from Princeton University, with an AB in Mathematics and a Certificate in Applications of Computing. My thesis, "A Practical Variant of Cuckoo Hashing", was supervised by Prof. Robert Sedgewick.
In 2009, I was the valedictorian of Anatolia College's IB Diploma Programme.
Work and Teaching Experience
I spent the summers of 2017 and 2018 in the FPGA/Hardware group of Jump Trading. I also interned with the Embedded Systems team at Microsoft Research, where I investigated a novel source of information leakage on Xilinx FPGAs under Dr. Ken Eguro. Before starting my PhD, I was an intern in the Product Abuse team at Dropbox, the Windows Security team at Microsoft, and the Data License team at Bloomberg.
During my degree at Princeton, I was a Grader and Lab TA at the computer science department for courses across all undergraduate levels. I have had similar duties in the mathematics and computer science departments at Oxford, including TAing masters-level computer security courses.
I. Giechaskiel, K. B. Rasmussen, and J. Szefer, "Reading Between the Dies: Cross-SLR Covert Channels on Multi-Tenant Cloud FPGAs," 37th IEEE International Conference on Computer Design (ICCD), Abu Dhabi, United Arab Emirates, November 2019. [(Author Copy and Final Version Forthcoming)]
I. Giechaskiel, Y. Zhang, and K. B. Rasmussen, "A Framework for Evaluating Security in the Presence of Signal Injection Attacks," 24th European Symposium on Research in Computer Security (ESORICS), Luxembourg, Luxembourg, September 2019. [Author Copy, Earlier Preprint, and Final Version (Extended Technical Report Forthcoming)]
I. Giechaskiel, K. B. Rasmussen, and J. Szefer, "Measuring Long Wire Leakage with Ring Oscillators in Cloud FPGAs," 29th International Conference on Field-Programmable Logic and Applications (FPL), Barcelona, Spain, September 2019. [Author Copy, and (Final Version Forthcoming)]
I. Giechaskiel, K. Eguro, and K. B. Rasmussen, "Leakier Wires: Exploiting FPGA Long Wires for Covert- and Side-Channel Attacks," ACM Transactions on Reconfigurable Technology and Systems (TRETS) vol. 12, no. 3, pp. 11:1-11:19, August 2019. [Author Copy, and Final Version]
I. Giechaskiel, K. B. Rasmussen, and K. Eguro, "Leaky Wires: Information Leakage and Covert Communication Between FPGA Long Wires," 13th ACM Asia Conference on Computer and Communications Security (ASIACCS), Incheon, South Korea, June 2018. [Author Copy, Earlier Preprints, and Final Version.]
I. Giechaskiel, C. Cremers, and K. B. Rasmussen, "When the "Crypto" in Cryptocurrencies Breaks: Bitcoin Security Under Broken Primitives," IEEE Security & Privacy, vol. 16, no. 4, pp. 46-56, July/August 2018. [Author Copy, and Final Version]
I. Giechaskiel, C. Cremers, and K. B. Rasmussen, "On Bitcoin Security in the Presence of Broken Cryptographic Primitives," 21st European Symposium on Research in Computer Security (ESORICS), Heraklion, Greece, September 2016. [Author Copy, Earlier Preprint, and Final Version.]
I. Giechaskiel, G. Panagopoulos, and E. Yoneki, "PDTL: Parallel and Distributed Triangle Listing for Massive Graphs," 44th International Conference on Parallel Processing (ICPP), Beijing, China, September 2015. [Author Copy, Code, Extended Technical Report, and Final Version]
My name, spelled Ηλίας Γιεχασκιέλ in Greek, is pronounced as ee-LEE-us ye-ha-SKEL.
During my PhD years, I participated in several security Capture-the-Flag (CTF) contests, placing second in Tripwire VERT's 2015 Cyber Security Capture The Flag Contest. I co-founded the Oxford Computer Science CTF Team Ox002147, of which I was captain until 2019. The team was ranked top 100/14,000+ teams globally in 2017, and placed first in in-person CTF competitions organized by Deloitte and BAE Systems. In high school, I competed in Mathematical Olympiads at the Greek National, Balkan (1, 2), and International (1, 2) level.
I occasionally dabble with Android development, having added support for Greek in Hacker's Keyboard, and having published a Tasker plugin allowing messages to be sent over Bluetooth serial. I designed my brother's
prefers-color-scheme media feature.