Researchers have recently uncovered an undocumented feature in certain ESP32 microcontrollers that allows them to function as software-defined radios, effectively extracting I/Q data before the WiFi modem. This development is significant for cybersecurity professionals as it introduces a new, potentially low-cost platform for radio frequency monitoring and analysis, expanding the attack surface and requiring vigilance regarding unauthorized signal interception. It will be interesting to observe if developers can integrate SDR software directly onto the ESP32 chip to create a fully self-contained system.
Read the full article at Hackaday
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