Presented at
DEF CON 33 (2025),
Aug. 10, 2025, 9 a.m.
(240 minutes).
This hands-on technical training dives deep into the mechanics and mitigation of signal jamming—an increasingly critical threat in both civilian and military communication systems. Attendees will explore the electromagnetic spectrum, modulation techniques, and the physical principles that enable signal jamming. We will analyze common types of jammers, their circuitry, and how they disrupt RF communications. Participants will also gain insight into detection methods, spectrum analysis, and counter-jamming strategies using SDRs and directional antennas. The course balances theory and practice, with live demonstrations and dissection of real-world jamming scenarios. Prior familiarity with RF fundamentals and basic electronics is helpful but not required. To get the most from this session, attendees are encouraged to review basic electromagnetic theory and brush up on SDR tools like GNU Radio or SDR# ahead of time. This session is ideal for cybersecurity professionals, drone operators, RF engineers, and technical hobbyists seeking to understand and combat one of the most disruptive tools in electronic warfare.
Presenters:
-
Preston Zen
- 1337sheets.com
Preston Zen is a OSCE3 Cybersecurity Certified maker and breaker of all things technology from custom electronics to bespoke software. Humanitarian volunteer in Ukraine since 2022 in logistics and engineering as well as one of the leading innovators of field implemented technology use cases
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