If you want to sabotage one in ways that are really subtle and evil, apply for a menial job at one, and when they give you a tour of the site, drop rhizome fragments of Japanese knotwood wherever there's a corner with some soil that's a bit out of view.

That stuff fucks up concrete. It will grow into cracks and apply pressure at levels of a 25kg/cm², essentially exploiting any slight flaw in the concrete by making it worse. It grows into a large mass underground while above ground it only shows shoots at first. (People who know the plant will instantly recognize the shoots in question ... but how many people building industrial parks have that degree of botanical knowledge? And even if they did, how many techbrodude managers would take it seriously enough to tackle the plant with the alacrity and overwhelming force that's required to get it before it's too late?) That large mass will cause the ground to rise, breaking up pavement, making sidewalks and roads uneven, and, as mentioned above, causing expanding damage to foundations leading to destructive leaks and other such issues. It's an absolute monster of a plant and it takes forever to clear out. One missed rhizome fragment (as little as 0.7g) and the problem starts up all over again.

It typically takes YEARS to clear up a knotwood problem, at a price in millions.

And then you go back in and do it all over again. This time with clay packed with their rhizomes in the treads of your shoes.

Or you go back in and do it with any of the running bamboos of the Phyllostachys genus: Golden Bamboo, Yellow Grove Bamboo, Giant Timber Bamboo, etc. (The last of that list, incidentally, might even be scarier than knotwood for the sheer damage it can cause and the stunning speed in which it can cause it.)

Now if you do this, I will applaud vigorously from here on the other side of the planet. You're directly causing damage to the very infrastructure the new Nazis of the USA are building with these data centres.

Do not get tempted to use giant hogweed, however. That won't damage the data centre. It will cause permanent scarring and blindness to the working class folk sent in to clean it up. Focus your rage on the actual targets and their toys, not on their exploited hired hands.