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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 -
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Jointly Learning Band Selection and Filter Array Design for Hyperspectral Imaging
(2023)Conference Paper -
The potential of making competences acquired through Citizen Science visible
(2023)PoS: Proceedings of ScienceThe following article reflects on the competences acquired in Citizen Science and their visibility. It is based on a workshop at the Austrian Citizen Science Conference in June 2022, where it was shown that the acquisition of competences in Citizen Science projects is rarely discussed at project level, neither in relation to citizen scientists nor for academic scientists. Concepts, tools and practices existing in the D-A-CH region to ...Conference Paper -
Knowledge should not be lost! Interview with a volunteer
(2023)PoS: Proceedings of ScienceUnder the catchy slogan "Do you know more?", the ETH Library’s Image Archive has been calling on interested members of the public since the end of 2015 to help identify, describe, and georeference historical images. The image archivist discusses with one volunteer why one should sacrifice one's free time for a crowdsourcing project.Conference Paper -
Automatic Feasibility Study via Data Quality Analysis for ML: A Case-Study on Label Noise
(2023)Conference Paper