Makes you wonder how much of this is out there. Not the miner or 2 running in an office. But a more than a dozen or so that are shown in the picture.
Plenty of older buildings out there with power and ducting going who knows were as things were moved and reconstituted and changed over years and years of needing to have different things configured in different spaces.
-Dave
Since it's cheap to get out-of-date mining hardware I would guess there are thousands, maybe tens of thousands illegal mining activities running at this moment. Most of them probably teens leeching electricity from their parents and overheating their poor GPUs for some mili-ETH.
But just recently I heard about an IT guy working at a university nearby, who had some ASICs running alongside some real servers. And there are probably so many more similar activities that are going unnoticed.
Nice for decentralization, not so great if individuals are directly affected - but my guess is it's usually large companies or public place (-> tax payers) that are getting drained. Otherwise it would quickly ring some alarm bells as soon as the latest energy bill is presented.