Echo TEMPEST: EM Information Leakage Induced by IEMI for Electronic Devices

Kaji, Shugo; Fujimoto, Daisuke; Kinugawa, Masahiro; Hayashi, Yu-ichi

doi:10.1109/temc.2023.3252636

Cited by 13 publications

(3 citation statements)

References 26 publications

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“…Within the domain-specific literature, the computing devices compromising electromagnetic emanations' study are addressed, at a general level, in several papers, such as [16][17][18]. In work [16], the authors present how electromagnetic emanation security breaches can be exploited using economically affordable instrumentation to eavesdrop on the interest's signals.…”

Section: Related Workmentioning

confidence: 99%

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Detection of the Compromising Audio Signal by Analyzing Its AM Demodulated Spectrum

Vizitiu,

Dobrescu,

Trip

et al. 2024

Symmetry

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The information technology and communication (IT&C) market consists of computing and telecommunication technology systems, which also include a variety of audio devices. Preserving the confidentiality of transmitted information through these devices stands as a critical concern across various domains and businesses. Notably, spurious electromagnetic emanations emitted by audio devices can be captured and processed, potentially leading to eavesdropping incidents. The evaluation of electronic devices for potential security vulnerabilities often involves employing Transient Electromagnetic Pulse Emanation Standard (TEMPEST) technology. This paper introduces a novel approach to TEMPEST testing specifically tailored for audio devices. The outcomes of the proposed approach offer valuable insights into TEMPEST equipment testing, aiming to mitigate the potential risks posed by threats exploitable by eavesdroppers in everyday scenarios. The present work delves into the examination of two ubiquitous global electronic devices: a notebook and a pair of in-ear headphones. The symmetrical framework of this study arises from the intrinsic similarity that, despite belonging to distinct categories, both devices possess the capability to emit electromagnetic emissions that contain compromised audio signals. This assertion is substantiated by the measurement results presented herein. The proposed methodology involves the analysis of the audio amplitude modulation (AM) demodulated signal in the frequency domain. This innovative approach not only mitigates operator fatigue but also significantly reduces the testing time required for these devices and instrument running hours and leads to the development of new applications.

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Section: Related Workmentioning

confidence: 99%

“…In the same manner, paper [18] highlights the feasibility of information leakage, emphasizing the integrated circuits (IC), elements that depict the key of the current electronic devices [19].…”

Section: Related Workmentioning

confidence: 99%

Detection of the Compromising Audio Signal by Analyzing Its AM Demodulated Spectrum

Vizitiu,

Dobrescu,

Trip

et al. 2024

Symmetry

View full text Add to dashboard Cite

show abstract

“…Typically, devices exhibiting weak EM emission intensities are not the primary targets. In [255] categorizes this threat as "Echo TEMPEST." Validation is conducted on diverse components, including an evaluation board simulating the I/O circuit of the IC, UART modules, and USB key-boards.…”

Section: Side Channel Protection Countermeasuresmentioning

confidence: 99%

Era of Sentinel Tech: Charting Hardware Security Landscapes Through Post-Silicon Innovation, Threat Mitigation and Future Trajectories

Srinivas,

Elango

2024

IEEE Access

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To meet the demanding requirements of VLSI design, including improved speed, reduced power consumption, and compact architectures, various IP cores from trusted and untrusted platforms are often integrated into a single System-on-Chip (SoC). However, this convergence poses a significant security challenge, as adversaries can exploit it to extract unauthorized information, compromise system performance, and obtain secret keys. Meanwhile, traditional CMOS features have limitations in addressing hardware vulnerabilities and security threats, so promising post-silicon technologies offer potential solutions. Beyond-CMOS technologies offer avenues to fortify hardware security through distinct physical properties and nontraditional computing paradigms. These advancements bolster authentication processes, enhance key generation mechanisms, ensure hardware integrity and fortify resilience against side-channel attacks, hardware Trojans and quantum-resistant cryptography in securing hardware systems. This article provides a detailed review of hardware security, encompassing the identification and mitigation of threats, the implementation of robust countermeasures, the utilization of innovative primitives, countermeasures, various methodologies and distinct features offered by emerging technologies to resist hardware threats.Moreover, strategies to address challenges, explore future directions, and outline plans for achieving further research outcomes have been put forth in this field.

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Optimal Blind Focusing on Perturbation‐Inducing Targets in Sub‐Unitary Complex Media

Sol,

Le Magoarou,

del Hougne

2024

Laser & Photonics Reviews

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The scattering of waves in a complex medium is perturbed by polarizability changes or displacements of embedded targets. These perturbations can serve as perfectly non‐invasive guidestars for focusing on the targets. Here, a fundamental but to‐date overlooked difference between these two perturbation types is theoretically derived: the change of the scattering matrix is of rank one [two] for a polarizability change [displacement] of a point‐like target; optimal strategies to perfectly focus on the target in both cases are identified accordingly. In particular, in the latter case, optimal focusing requires at least two target displacements. Furthermore, for the case of dynamic complex media additionally featuring parasitic perturbers, a non‐invasive scheme to achieve optimal time‐averaged power delivery to a perturbation‐inducing target is established. In all cases, no assumptions about the unitarity of the system's scattering matrix or the perturbation strength are necessary. All results are experimentally demonstrated in the microwave regime using a strongly sub‐unitary lossy chaotic cavity as a complex medium. The experiments highlight that the target's “structural scattering” is irrelevant [must be negligible] in the case of target polarizability changes [displacements]. The presented results are expected to find applications in communications, cybersecurity, wireless bioelectronics, flow‐cytometry, and self‐propelled nano‐swimmers.

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Echo TEMPEST: EM Information Leakage Induced by IEMI for Electronic Devices

Cited by 13 publications

References 26 publications

Detection of the Compromising Audio Signal by Analyzing Its AM Demodulated Spectrum

Detection of the Compromising Audio Signal by Analyzing Its AM Demodulated Spectrum

Era of Sentinel Tech: Charting Hardware Security Landscapes Through Post-Silicon Innovation, Threat Mitigation and Future Trajectories

Optimal Blind Focusing on Perturbation‐Inducing Targets in Sub‐Unitary Complex Media

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