A Computational Harmonic Detection Algorithm to Detect Data Leakage through EM Emanation

• URL: http://arxiv.org/abs/2410.16316v1
• Date: Wed, 09 Oct 2024 14:40:15 GMT
• Title: A Computational Harmonic Detection Algorithm to Detect Data Leakage through EM Emanation
• Authors: Md Faizul Bari, Meghna Roy Chowdhury, Shreyas Sen,
• Abstract summary: Unintended electromagnetic emissions from electronic devices, known as EM emanations, pose significant security risks. Defense organizations typically use metal shielding to prevent data leakage, but this approach is costly and impractical for widespread use. We propose a harmonic-based detection method by developing a computational harmonic detector.
• Score: 0.08192907805418582
• License:
• Abstract: Unintended electromagnetic emissions from electronic devices, known as EM emanations, pose significant security risks because they can be processed to recover the source signal's information content. Defense organizations typically use metal shielding to prevent data leakage, but this approach is costly and impractical for widespread use, especially in uncontrolled environments like government facilities in the wild. This is particularly relevant for IoT devices due to their large numbers and deployment in varied environments. This gives rise to a research need for an automated emanation detection method to monitor the facilities and take prompt steps when leakage is detected. To address this, in the preliminary version of this work [1], we collected emanation data from 3 types of HDMI cables and proposed a CNN-based detection method that provided 95% accuracy up to 22.5m. However, the CNN-based method has some limitations: hardware dependency, confusion among multiple sources, and struggle at low SNR. In this extended version, we augment the initial study by collecting emanation data from IoT devices, everyday electronic devices, and cables. Data analysis reveals that each device's emanation has a unique harmonic pattern with intermodulation products, in contrast to communication signals with fixed frequency bands, spectra, and modulation patterns. Leveraging this, we propose a harmonic-based detection method by developing a computational harmonic detector. The proposed method addresses the limitations of the CNN method and provides ~100 accuracy not only for HDMI emanation (compared to 95% in the earlier CNN-based method) but also for all other tested devices/cables in different environments.

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