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What about any USB device plugged in that may seem so innocent. Keyboard, 7in1 reader, mouse, usb cable, and even power supplies these days like USB-C. Is there some reliable way to see exactly what the connected the operating system is granting to the underlying hardware?

How can I be sure, for example, a 7in1 plugged in via usb-c does not have a hidden camera, microphone, or keylogger for example? Is there some sane way to check?

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On Linux you can use lsusb to see what exactly is connected. I think on Windows you could see the tree graphically in "device manager." I don't know if OSX has anything built in.

On OS X you can run:

# system_profiler SPUSBDataType

Besides the enterprise grade tools I've been using Glasswire. It's like LittleSnitch for the Mac.

They aren't a huge security company so I don't know how easy it is to escape detection however their verbose reporting of application version changes, protocol usage, destination lists, and integration with Virus total gives me some sort of confidence.

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