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WiFi Hides Inside a USB Cable

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Re: WiFi Hides Inside a USB Cable

#121

Earlier quoted context omitted.

In super secure locations like a SCIF, a TSCM (technical surveillance countermeasures) team comes through on a regular basis with highly sensitive, expensive portable spectrum analyzers, which would find this really quick.

If you were designing a modern bug, wouldn't you make it cache data and limit its transmission window to one second a week?

Speech to text aboard, compress the text and send it in bursts at random times.

Re: WiFi Hides Inside a USB Cable

#122
post #40

About a month ago I found a similar device on aliexpress that has GPS and SIM card slot: https://www.aliexpress.com/item/1m-USB-Charging-Data-Cable-f... ?

Would be even scarier with eSIM, but I suppose it's just a matter of time before we get that.

Re: WiFi Hides Inside a USB Cable

#123
Another reason to use QubesOS, where usb devices are connected to a separate virtual machine without any networking. And any usb keyboards are only activated after a confirmation.

Re: WiFi Hides Inside a USB Cable

#125
post #77

Earlier quoted context omitted.

https://www.simplewifi.com/products/parabolic-grid "2.4Ghz wifi antenna extends a 7 degree wide cone, allowing it to perform over large distances up to 8 miles of range."

Or if a real parabolic antenna is too expensive, sticking a copper wire on a BNC connector mounted in a Pringles can (5 GHz) or wider tin soup can (2.4 GHz) works as a cheap alternative. https://en.wikipedia.org/wiki/Cantenna http://www.turnpoint.net/wireless/cantennahowto.html

Even simpler would be to take a standard dipole and put a corner reflector around it (not quite as pin-point powerful, but you can still get plenty of gain). You can make these out of roofing flashing.

Re: WiFi Hides Inside a USB Cable

#126
post #20

Earlier quoted context omitted.

In secure locations it's common for USB ports to be physically blocked (the ones I've seen with glue/resin).

I have seen in the UK solder used to physically block usb ports on laptops - this was QinetiQ (the bit that remained as civilservants). Of course they equipped the laptop with a cd burner

> I have seen in the UK solder used to physically block usb ports on laptops

With devices moving to USB-C for data and charging I wonder how security companies are going to prevent physical access to USB ports...

Re: WiFi Hides Inside a USB Cable

#127
post #123

Another reason to use QubesOS, where usb devices are connected to a separate virtual machine without any networking. And any usb keyboards are only activated after a confirmation.

Noob question: How do you confirm?

Qubes is designed for laptops, so your first keyboard does not need any confirmation (it's not connected via usb).

upd: Alternatively, for installations with a usb keyboard, this defence is disabled.

Re: WiFi Hides Inside a USB Cable

#129

Earlier quoted context omitted.

I have seen in the UK solder used to physically block usb ports on laptops - this was QinetiQ (the bit that remained as civilservants). Of course they equipped the laptop with a cd burner

> I have seen in the UK solder used to physically block usb ports on laptops With devices moving to USB-C for data and charging I wonder how security companies are going to prevent physical access to USB ports...

Disable the USB controller?
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