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stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2534

Posted: 07:28pm 22 Jan 2025

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This may seem daft but watch the video.
if the usb stick or the cable simulates a keyboard why not a rpipico usb to detect a keyboard. it wouldn't detect a usb memory stick.. so if it detects a kb then it's bogus??
https://www.youtube.com/watch?v=e_f9p-_JWZw&t=141s
https://www.youtube.com/watch?v=mPF9f-PLDPc

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4037

Posted: 09:34pm 22 Jan 2025

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Do you mean connect the suspect USB stick to a pico to see if it comes up as a kb?

And if it does then don't connect to a PC?

Sounds sane. Might not work if a fake stick can tell it's not connected to a PC so it decides not to be a kb - but I don't know if that's possible.

John

stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2534

Posted: 10:07pm 22 Jan 2025

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JohnS said Do you mean connect the suspect USB stick to a pico to see if it comes up as a kb?

And if it does then don't connect to a PC?

Sounds sane. Might not work if a fake stick can tell it's not connected to a PC so it decides not to be a kb - but I don't know if that's possible.

John

I think it uses say win or linux but says it will find os.
if it sets up as hid then pico might see it as a keyboard, not connected usb mem to picousb as maybe damage.

Frank N. Furter
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Joined: 28/05/2012
Location: Germany
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Posted: 07:34am 23 Jan 2025

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A friend of mine once saw a mouse at a security training course many years ago that started coding as soon as the light was switched off. Only then did it register as a keyboard and program viruses...

Frank

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4037

Posted: 07:47am 23 Jan 2025

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Frank N. Furter said A friend of mine once saw a mouse at a security training course many years ago that started coding as soon as the light was switched off. Only then did it register as a keyboard and program viruses...

Frank

Eek!

John [or squeak]
Edited 2025-01-23 17:47 by JohnS

robert.rozee
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Joined: 31/12/2012
Location: New Zealand
Posts: 2436

Posted: 08:43am 23 Jan 2025

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sounds like what we need is a means to tell the operating system to exclude any keyboards other than those plugged into a specific USB port. after all, once set up how often do you want to move your wired or wireless keyboard from one USB port to another?

cheers,
rob :-)

Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 5054

Posted: 10:42am 23 Jan 2025

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Commercial available: shiver....

tools

PicomiteVGA PETSCII ROBOTS

stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2534

Posted: 03:52pm 23 Jan 2025

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Volhout said Commercial available: shiver....

tools

and we worry about windows spying...

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7856

Posted: 04:07pm 23 Jan 2025

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Want a secure system? Run a Nascom 2 with no outside access. :)
I doesn't do anything, but isn't that a small price to pay for security?

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 5054

Posted: 07:55pm 23 Jan 2025

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I have very fond memories of the COSMAC (1802)

. It is like a Altair, keying in the bootloader every single time you power on.

Volhout
Edited 2025-01-24 05:55 by Volhout

PicomiteVGA PETSCII ROBOTS

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