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REGA: Scalable Rowhammer Mitigation with Refresh-Generating Activations
(2023)Mitigating Rowhammer requires performing additional refresh operations to recharge DRAM rows before bits start to flip. These refreshes are scarce and can only happen periodically, impeding the design of effective mitigations as newer DRAM substrates become more vulnerable to Rowhammer, and more “victim” rows are affected by a single “aggressor” row. We introduce REGA, the first in-DRAM mechanism that can generate extra refresh operations ...Conference Paper -
MEGA: Malleable Encryption Goes Awry
(2023)MEGA is a leading cloud storage platform with more than 250 million users and 1000 Petabytes of stored data. MEGA claims to offer user-controlled, end-to-end security. This is achieved by having all data encryption and decryption operations done on MEGA clients, under the control of keys that are only available to those clients. This is intended to protect MEGA users from attacks by MEGA itself, or by adversaries who have taken control ...Conference Paper -
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Grounding Graph Theory in Embodied Concreteness with Virtual Reality
(2023)Abstract mathematics can be difficult to grasp, in part because it relies on symbols and formalisms that are powerful yet meaningless to novices unless grounded in concreteness. Although a wide corpus of research focuses on concreteness in mathematics education, the notion of concreteness can be apprehended in various ways and it is not yet clear which specific aspects of concreteness help the learners. In this paper, we explore embodiment ...Conference Paper -
Identifying adaptive cruise control operation from trajectory data using deep learning
(2023)The number of publicly-available observations concerning highly automated vehicles but also human-driven ones is increasing lately. Such datasets can provide invaluable information regarding the behavioral properties of human drivers, as well as commonalities and differences with controllers that take over the vehicle movement. Late findings in the literature initiate a discussion on this topic studying properties such as response or ...Conference Poster -
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Introducing hybrid vehicle dynamics in microscopic traffic simulation
(2023)Hybrid electric vehicles (HEVs) have reached the market share required to meaningfully affect many aspects of the road transport system, including traffic behaviour, energy consumption, and emissions. However, traffic models for hybrids remain insufficiently addressed in microscopic simulation because traditional models ignore vehicle dynamics, and therefore, cannot capture driving differences that exist among the hybrid, conventional, ...Other Conference Item -
Commercially implemented adaptive cruise control systems are not evil
(2023)Vehicle automation is regarded as one of the most promising technologies in transportation networks to alleviate congestion, improve safety and energy efficiency. Adaptive cruise control (ACC) systems, which serve as the first step of automation, are already standard equipment in many commercially available vehicles. Therefore, the observation-based assessment of such systems individually and in platoon formations, is very appealing. This ...Conference Poster -
Jointly Learning Band Selection and Filter Array Design for Hyperspectral Imaging
(2023)Conference Paper