The privacy invasion of WiFi signals

For years, the ability to use WiFi technology as a spying and surveillance tool has been fairly powerful and documented.

But this goes well beyond man-in-the-middle attacks happening between a device and a WiFi router or intercepting and logging all traffic on a network that reveals sent and received data.

These are pretty bad and data privacy-violating scenarios, but what researchers started playing with, particularly with the advent of "internet of things" (IoT) devices, was to monitor and interpret the movements of humans in an area covered by WiFi signals.

These systems draw on the way the technology, that is now omnipresent particularly in urban areas - in people's homes, offices, streets, and more.

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