Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Andy Burns <usenet@andyburns.uk>
Newsgroups: comp.misc,comp.security.misc
Subject: Re: [CM] the USB killer now exists and is being mass-produced
Date: Wed, 7 Dec 2016 18:56:13 +0000
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RS Wood quoted:

> "The USB Killer is shockingly simple in its operation. As soon as you
> plug it in, a DC-to-DC converter starts drawing power from the host
> system and storing electricity in its bank of capacitors (the
> square-shaped components). When the capacitors reach a potential of
> -220V, the device dumps all of that electricity into the USB data
> lines"

You could use a USB Condom (now known as a SyncStop) to isolate the data 
pins, no doubt the USB Killer II will send the high voltage back on the 
5V rail

<http://syncstop.com/#faq-original>