You know how keyloggers usually need software on your machine or a device plugged into your keyboard? Forget all that. Imagine a tiny sticker, an inch wide, glued under your desk. No battery, no wires, no link to your keyboard at all. And someone in the next room reads every key you press - passwords, messages, searches.

The wild part? It works through a 15 cm concrete wall, with no direct radio path. The signal just detours through the concrete. They even published the attack code.

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