Cybersecurity Focus and Contributions in Distributed Computing Systems
Explore the expertise and contributions to EU policy in cybersecurity by DCS Lab led by Evangelos Markatos. Discover their involvement in key projects and the pathways their graduates have taken in academia and industry. Delve into innovative solutions for sharing secrets in cybersecurity.
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Presentation Transcript
DCS Lab: Short Presentation Evangelos Markatos: markatos@ics.forth.gr
2 Distributed Computing Systems and Cybersecurity Focus: Cyber Security and Privacy Areas of expertise: Systems Security, Privacy, cyberattacks Contributions to EU Policy: Europol EC3 (European CyberCrime Center) Participation in the pilot projects for the European CybersEcurity Competence Network (CONCORDIA and CyberSec4Europe)
3 Distributed Computing Systems and Cybersecurity Contributions to EU Policy: ENISA: Research Priorities ECSO (European CyberSecurity Organization): Strategic Research and Innovation Agenda Service to the Community: Safer Internet Access: SaferInternet4kids.gr Projects: More than 60 R&D projects implemented
4 Where are our Graduates? Academia Michalis Polychronakis, Ph.D. ( 09) Assistant Professor Stony Brook Iason Polakis, Ph.D. ( 14) Assistant Professor, UIC Elias Athanasopoulos, Ph.D. ( 10) Assistant Professor, VUA and U of Cyprus Apostolis Zaras, M.Sc. ( 10) Assistant Professor, U Maastricht Nick Nikiforakis, M.Sc. ( 10) Assistant Professor, Stony Brook Industry Facebook, Apple, Symantec, Tenable, IBM, etc.
5 Problem: How to share a secret? Cyber Security is usually based on secrets: Passwords (private) Keys The secrets are usually known by two people: The sender and the receiver The client and the server The employee and the server The employee knows the entire secret e.g. the entire password Some secrets though are TOO MUCH for a single person: e.g. Payments larger than 30,000 euros need to be authorized by TWO employees Sales larger than 100Keuros need to be authorized by TWO vice presidents
6 Problem: How to share a secret? II So, we need to SHARE a secret - Let us focus on an example: A company have 5 Vice Presidents Purchases larger than 100K euros need to be authorized by at least three Vice Presidents How do you do it? One Possible Solution: Break the secret (purchase authorization) into 3 pieces Give each Vice President a piece Piece 1 Piece 2 Piece 3 Piece1: VP1 and VP4 Piece2: VP2 and VP5 Piece 3: VP3
7 Problem: How to share a secret? III Piece 1 Piece 2 Piece 3 Piece1: VP1 and VP4 Piece2: VP2 and VP5 Piece 3: VP3 If we select VP1 , VP2, and VP3 We have all pieces If we select Vice Presidents VP1, VP4, and VP5 We do not have Piece 3 What do we do?
8 Problem: How to share a secret? IV Piece 1 Piece 2 Piece 3 . Piece K We want to give one piece to each of N employees How can we share the secret so that ANY set of K (out of the N) employees should be able to recover the secret ANY set of K-1 employees should NOT be able to recover the secret If you solve the problem If you find the problem interesting Come and talk to me
DCS Lab: Short Presentation Evangelos Markatos: markatos@ics.forth.gr
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