Eleftherios Kokoris Kogias
Hi! I am Lefteris (or Lef).
I am a PhD researcher at EPFL, advised by Prof. Bryan Ford.
My research lies in-between computer systems, computer security and applied cryptography.
I am particularly interested in decentralised trust systems, that increase robustness and transparency of today’s Internet.
I am working on building a scalable and robust infrastructure for the future decentralised internet focusing on scalable blockchain systems, bias-resistant decentralised randomness generation, secure software update dispersion and novel applications of threshold cryptography and distributed consensus.
My work has been published in top tier computer science conferences like USENIX Security and IEEE Security & Privacy.
I am also grateful to have received the IBM PhD Fellowship, the EPFL EDIC Fellowship, and the NTUA Thomaidio Award.
Fields of expertise
Decentralized/Distributed Systems, Systems Security, Operating Systems, Networks,
Blockchain technology, Internet of Things
|Masters of Electrical and Computer Engineering||Computer Systems||National Technical University of Athens||10.2010-06.2015|
|with Philipp Jovanovic, Linus Gasser, Nicolas Gailly, Ewa Syta and Bryan Ford
39th IEEE Symposium on Security and Privacy, 2018 (accepted 63/549)
|OmniLedger: A Secure, Scale-Out, Decentralized Ledger via Sharding|
|with Philipp Jovanovic, Nicolas Gailly, Ismail Khoffi, Linus Gasser, and Bryan Ford
In 25th USENIX Security Symposium,2016 (accepted 72/467)
|Enhancing Bitcoin Security and Performance with Strong Consistency via Collective Signing|
|with Kirill Nikitin, Philipp Jovanovic, Nicolas Gailly, Linus Gasser, Ismail Khoffi, Justin Cappos and Bryan Ford
26th USENIX Security Symposium (USENIX Security 17)
|CHAINIAC: Proactive Software-Update Transparency via Collectively Signed Skipchains and Verified Builds (85/527)|
|with Ewa Syta, Philipp Jovanovic, Nicolas Gailly, Linus Gasser, Ismail Khoffi, Michael J. Fischer and Bryan Ford
38th IEEE Symposium on Security and Privacy, 2017 (accepted 60/463)
|Scalable Bias-Resistant Distributed Randomness|
|with Elli Androulaki, Christian Cachin and Angelo De Caro
23rd European Symposium on Research in Computer Security, 2018 (accepted 56/283)
|Channels: Horizontal Scaling and Confidentiality on Permissioned Blockchains|
|with Linus Gasser, Ismail Khoffi, Philipp Jovanovic, Nicolas Gailly and Bryan Ford
Hot Topics in Privacy Enhancing Technologies (HotPETs), 2016 (accepted 9/29)
|Managing Identities Using Blockchains and CoSi|
|with Philipp Jovanovic, Nicolas Gailly, Ismail Khoffi, Linus Gasser and Bryan Ford
37th IEEE Symposium on Security and Privacy, 2016 Poster Session
|Poster: Bitcoin Meets Collective Signing|
|with Orfefs Voutyras and Theodora Varvarigou
10th International Workshop on Service-Oriented Cyber-Physical Systems in Converging Networked Environments (SOCNE) Berlin, Germany, September 2016
|TRM-SIoT: A Scalable Hybrid Trust & Reputation Model for the Social Internet of Things|