[Blabber] Killer USB stick

Robby O'Connor robby.oconnor at gmail.com
Sun Dec 4 22:55:12 UTC 2016


Can we not and say we did? Because this sounds like a bad idea. I generally distrust people with devices like this.
On 12/03/2016 06:59 PM, James Carpino via Blabber wrote:
> Well, so we could put together and sell an
> anti-anti-computer-dongle-dongle.  Sounds like a good idea.
>
> James
>
>
>
>
> ------------------------------------------------------------------------
> *From:* Michael Robinson <elvagante at gmail.com>
> *To:* Hack Manhattan! <blabber at list.hackmanhattan.com>
> *Sent:* Saturday, December 3, 2016 6:24 PM
> *Subject:* Re: [Blabber] Killer USB stick
>
> Crowbar:  series fuse and a shunt clamp. I can only think that a fuse
> has negligible effect on bandwidth.  There are commercially available
> crowbar chips for protecting telecommunications equipment from lightning
> surges, I googled it.  Maybe not small and cheap enough for USB ports,
> but that's not to say you couldn't produce such a thing.
>
> On Dec 3, 2016 1:36 PM, "Guan Yang" <guan at hackmanhattan.com
> <mailto:guan at hackmanhattan.com>> wrote:
>
>     There are integrated isolators available for USB. Some are based on
>     giant magnetoresistance, but there are other methods too, like the
>     good old transformer.
>
>     Here's one for full speed:
>
>     http://cds.linear.com/docs/en/ datasheet/2884fb.pdf
>     <http://cds.linear.com/docs/en/datasheet/2884fb.pdf>
>
>     I couldn't find any integrated solutions for high speed, but I think
>     it's possible. Gigabit Ethernet is (magnetically) isolated so you
>     can always serialize through that. Or you can go through a set of
>     fiberoptic transceivers.
>
>     Here's an overview of various techniques:
>
>     http://www.digikey.com/en/ articles/techzone/2015/aug/
>     digital-isolation-devices- find-pervasive-role-in-energy-
>     harvesting-applications
>     <http://www.digikey.com/en/articles/techzone/2015/aug/digital-isolation-devices-find-pervasive-role-in-energy-harvesting-applications>
>
>     On Dec 3, 2016, at 13:11, Michael Robinson <elvagante at gmail.com
>     <mailto:elvagante at gmail.com>> wrote:
>
> >     The writer suggests opto-isolators to protect against killer usb.
> >     Not.
> >     Opto-isolators are slooooooow.  Like a few tens of kilohertz
> >     bandwidth at most.
> >     Crowbar circuit, anyone?
> >
> >     On Sat, Dec 3, 2016 at 12:48 AM, Peter S. Shenkin
> >     <shenkin at gmail.com <mailto:shenkin at gmail.com>> wrote:
> >>     Sounds like a good Maker Faire project.   ;-)
> >>
> >>     http://arstechnica.com/ gadgets/2016/12/usb-killer-
> >>     fries-devices/
> >>     <http://arstechnica.com/gadgets/2016/12/usb-killer-fries-devices/>
> >>
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