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Learn to detect cell site simulators (Stingrays) using Rayhunter, a detection system built from an inexpensive cellular hotspot in this 40-minute DEF CON 33 conference talk. Discover how to capture and analyze real-time control plane traffic between cellular modems and base stations using Wireshark-like functionality. Explore the hardware components and software development required to extract low-level information from the Qualcomm DIAG protocol. Examine the methods employed by modern cell-site simulators through detailed technical analysis. Review independently validated test results from both simulated attack environments and real-world deployment scenarios. Understand the broader implications for journalists, researchers, and human rights defenders in detecting cellular surveillance activities.
