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From: Bill Sloman <bill.sloman@ieee.org>
Newsgroups: sci.electronics.design
Subject: Re: Hackers hope to democratize laser-based processor hacking for
 $500
Date: Tue, 6 Aug 2024 00:24:25 +1000
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On 5/08/2024 3:02 pm, Jan Panteltje wrote:
> On a sunny day (Sun, 04 Aug 2024 11:47:58 -0700) it happened John Larkin
> <jjlarkin@highlandtechnology.com> wrote in
> <10jvajpdoabqm9dqkucn7oniu6116cu10t@4ax.com>:
> 
>> On Sun, 04 Aug 2024 13:05:37 GMT, Jan Panteltje <alien@comet.invalid>
>> wrote:
>>
>>> Hackers hope to democratize laser-based processor hacking -
>>> a $500 RayV Lite relies on 3D printing, a laser pen, and a Raspberry Pi to bring costs down:
>>>
>>> https://www.tomshardware.com/tech-industry/cyber-security/hackers-hope-to-democratize-laser-based-processor-hacking-dollar500-rayv-lite-relies-on-3d-printing-a-laser-pen-and-a-raspberry-pi-to-bring-costs-down#main
>>>
>>> Nothing is safe:-)
>>> Seems a cool way to bypass security stuff.
>>> Gotta try my laser on a working chip.
>>>
>>
>> Sounds absurd. Decap an expensive chip, set it up to run and analyze
>> things, then bang one selected 20nm-square fet (out of a billion) with
>> focussed 600 nm light.
> 
> The way the article goes you just de-activate some checks for some short time

That does seem to be what the author of the article imagines to be on 
offer. It seems very unlikely to be something that the toys described 
could deliver.

> We will see if they publish.
> Remote destruction of chips is easy with a strong EM field.

If the electromagnetic field were strong enough to induce destructive 
currents in the metal links across the chip this could be correct.

It doesn't seem to be worth doing. Hitting them with a hammer works just 
as well, and it is lot cheaper.

-- 
Bill Sloman, Sydney


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