Technology risk without safeguards

William Herrin bill at
Wed Nov 4 17:18:12 UTC 2020

On Wed, Nov 4, 2020 at 8:49 AM Suresh Kalkunte <sskalkunte at> wrote:
> I believe the below described method of causing intentional (1) damage to equipment in data centers and (2) physical injury to a person at the workplace is on-topic for the NANOG community, if not, I look forward to your feedback. As a software developer who has subscribed to the NANOG mailing list for a number of years, I post this note relying on intellectual honesty that I have had the opportunity to observe since 1996-97.


Did you test against common equipment deployments or did you just
measure the field strength?

In common equipment deployments, the electronics are wrapped in two
layers of Faraday cage: the steel case of the equipment itself and the
steel cabinet into which the equipment is installed, both well
grounded. Penetration from even strong EM fields is limited.

Also, if you go to the expense of boring under someone's data center I
have to think dynamite will be more effective at disabling it.

Bill Herrin

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