Hackers Unlock Hidden Radio Capabilities in Cheap Chips
Source: Hackaday
The accidental discovery of undocumented I/Q sampling in ESP32 microcontrollers has triggered a cascade of reverse-engineering efforts across consumer hardware, turning $5 chips into software-defined radios that can transmit and receive arbitrary wireless signals. Finding and weaponizing hidden hardware features in mass-produced components reveals a recurring vulnerability: rising chip complexity creates security gaps that manufacturers either don't document or actively obscure, leaving billions of deployed devices exposed to RF attacks that chipmakers cannot easily patch.