bloomberg on supermicro: sky is falling

William Herrin bill at
Thu Oct 4 19:26:15 UTC 2018

On Thu, Oct 4, 2018 at 3:07 PM Denys Fedoryshchenko <denys at> wrote:
> It would be better for them(AMZN, SMCI, AAPL)  to prove that these
> events did not take place - in court.

"Can't prove a negative."

> In the opposite case, even if this article is full of inaccuracies,
> judging by the discussions of security specialists, the scenario
> indicated in the article is quite possible.

The Bloomberg article described them as looking like 'signal
conditioning couplers" on the motherboard. There is no such part on
server boards but maybe they meant optoisolators or power conditioning
capacitors. The former is a hard place to tweak the BMC from without a
high probability of crashing it. The latter doesn't touch the data
lines at all.

They also quoted someone describing such a hack as being "like
witnessing a unicorn jumping over a rainbow." I agree.

Bill Herrin

William Herrin ................ herrin at  bill at
Dirtside Systems ......... Web: <>

More information about the NANOG mailing list