![]() ![]() Benign objects-even a nail in a wall-can create false positives, though, so carefully vet whatever turns up. To identify those, use a device called a "nonlinear junction detector," which helps sniff out semiconductor electronics. Some bugs obfuscate their radio frequencies altogether, or might happen to be powered off during your sweep. For example, this audio bug (complete with SIM card) hides in a USB to micro-USB cord, drawing power any time the cord is plugged in, while listening to everything around it. It's also worth considering what devices you have in the open that bugs could hide in to steal power. ![]() Always follow visible wires, scan for wires in walls, and check outlets, crowded power strips, and extension cords. Some may run on a battery, giving them a limited lifespan, but persistent surveillance requires a steady power source. It's also important to think about a bug's power supply. Anything that's not coming from a neighbor or a nearby business, or other likely suspect, could be a bug's own network. Usually bugs that need internet connectivity will have a more clandestine plan for accessing the web, though, like using their own hotspot or SIM card, so also check the Wi-Fi networks with a strong signal available around you. Next, review the list of devices that are connected to your router for any that you don't recognize. ![]()
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