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Explore the technical analysis and modification of the TP-Link m7350 mobile hotspot device in this 26-minute conference talk from MRMCD2025. Learn about the detailed examination of the TP-Link m7350 conducted at the "chaospott" hackerspace and discover insights gained about the device's functionality. Understand the process of porting the Electronic Frontier Foundation's 'rayhunter' software to the TP-Link platform. Discover how 'rayhunter' uses heuristic methods to warn users about IMSI catchers (cell tower simulators used for surveillance) and enables the capture of .pcap files containing modem traffic data. Gain insights into mobile security research, hardware modification techniques, and privacy protection tools for detecting potential cellular surveillance threats.