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Leonidas Lavdas
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Journal Articles
Journal: EDFA Technical Articles
EDFA Technical Articles (2022) 24 (4): 22–29.
Published: 01 November 2022
Abstract
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This article describes how physical attacks can be launched on different types of nonvolatile memory (NVM) cells using failure analysis tools. It explains how the bit information stored inside these devices is susceptible to read-out and fault injection attacks and defines vulnerability parameters to help quantify risks associated with different modalities of attack. It also presents an in-depth security analysis of emerging NVM technologies and discusses potential countermeasures.
Proceedings Papers
ISTFA2022, ISTFA 2022: Conference Proceedings from the 48th International Symposium for Testing and Failure Analysis, 217-224, October 30–November 3, 2022,
Abstract
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Probing and imaging techniques that are conventionally used for failure analysis pose a major threat to the confidentiality and the integrity of data stored in non-volatile memory (NVM) cells integrated into a silicon chip. These techniques fall under the umbrella of physical attacks, which unlock tremendous capabilities for an attacker trying to access secret information stored in a target NVM. How vulnerable an NVM cell is to these attacks depends on device physics and the operational principles of the memory cell. The wide range of emerging NVM technologies opens new opportunities for attackers. Without significant attention to these emerging threats, confidential data stored in NVMs can get compromised without much effort, given access to advanced failure analysis tools. We aim to show how attackers can use their knowledge of how a memory device works to find out a suitable probing or imaging modality to extract the stored secret.