did they really find a backdoor in 1 billion devices? (esp32 drama) (youtube.com)
In a bluetooth chip make by Xpressive (China), which costs $8, and lets you turn any application into a wireless application, eg make your own 50-line Arduino C-coded smart coffeemaker. Used in IoT. Wireless backdoors in a wireless application everyone is insecure, becaues anyone in range can execute code.
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