gr-tempest: Spying Video Interfaces Through Electromagnetic Emanations

Explore the fascinating world of electromagnetic emanations and their potential for video interface espionage in this 25-minute conference talk from GNU Radio Conference 2021. Delve into the TEMPEST attack, also known as Van Eck Phreaking, which involves intercepting electromagnetic waves emitted by video interfaces to reconstruct displayed images. Learn about the mathematical principles behind this technique and discover gr-tempest, an open-source GNU Radio-based implementation. Examine real-world examples of both VGA and HDMI signals, understanding their fundamental differences and implications for security. Gain insights into the challenges and opportunities of Software Defined Radio in this context, and explore how gr-tempest extends and improves upon previous implementations like TempestSDR. Uncover the potential for experimentation and customization offered by this GNU Radio-based approach, opening new avenues for research and development in electromagnetic security.