41 citations · 82 across the 22 of their papers we have counts for
11 papers · 1 filter
Zero-Trust Network Access (ZTNA)
Vasilios Mavroudis
Zero-Trust Network Access (ZTNA) marks a significant shift in network security by adopting a "never trust, always verify" approach. This work provides an in-depth analysis of ZTNA,…
CybORG++: An Enhanced Gym for the Development of Autonomous Cyber Agents
Harry Emerson, Liz Bates, Chris Hicks +1
CybORG++ is an advanced toolkit for reinforcement learning research focused on network defence. Building on the CAGE 2 CybORG environment, it introduces key improvements, including…
Canaries and Whistles: Resilient Drone Communication Networks with (or without) Deep Reinforcement Learning
Chris Hicks, Vasilios Mavroudis, Myles Foley +3
Communication networks able to withstand hostile environments are critically important for disaster relief operations. In this paper, we consider a challenging scenario where drone…
Inroads into Autonomous Network Defence using Explained Reinforcement Learning
Myles Foley, Mia Wang, Zoe M +2
Computer network defence is a complicated task that has necessitated a high degree of human involvement. However, with recent advancements in machine learning, fully autonomous net…
An Interface between Legacy and Modern Mobile Devices for Digital Identity
Vasilios Mavroudis, Chris Hicks, Jon Crowcroft
In developing regions a substantial number of users rely on legacy and ultra-low-cost mobile devices. Unfortunately, many of these devices are not equipped to run the standard auth…
Adaptive Webpage Fingerprinting from TLS Traces
Vasilios Mavroudis, Jamie Hayes
In webpage fingerprinting, an on-path adversary infers the specific webpage loaded by a victim user by analysing the patterns in the encrypted TLS traffic exchanged between the use…
Snappy: Fast On-chain Payments with Practical Collaterals
Vasilios Mavroudis, Karl Wüst, Aritra Dhar +2
Permissionless blockchains offer many advantages but also have significant limitations including high latency. This prevents their use in important scenarios such as retail payment…
Libra: Fair Order-Matching for Electronic Financial Exchanges
Vasilios Mavroudis, Hayden Melton
While historically, economists have been primarily occupied with analyzing the behaviour of the markets, electronic trading gave rise to a new class of unprecedented problems assoc…
Towards Low-level Cryptographic Primitives for JavaCards
Vasilios Mavroudis, Petr Svenda
JavaCard is a multi-application security platform deployed to over twenty billion smartcards, used in applications ranging from secure payments to telecommunications. While the pla…
VAMS: Verifiable Auditing of Access to Confidential Data
Alexander Hicks, Vasilios Mavroudis, Mustafa Al-Bassam +2
We propose VAMS, a system that enables transparency for audits of access to data requests without compromising the privacy of parties in the system. VAMS supports audits on an aggr…
A Touch of Evil: High-Assurance Cryptographic Hardware from Untrusted Components
Vasilios Mavroudis, Andrea Cerulli, Petr Svenda +3
The semiconductor industry is fully globalized and integrated circuits (ICs) are commonly defined, designed and fabricated in different premises across the world. This reduces prod…