How about killing scientists and engineers? [1]

[1] https://en.wikipedia.org/wiki/Assassinations_of_Iranian_nucl...

Spying on and sabotaging weapons development of foreign adversaries is a completely normal government function

I wonder how many results got nerfed via https://en.wikipedia.org/wiki/Pentium_FDIV_bug before it was known about.

The first thing I thought of was The 3-Body Problem series. If you've read the books (or watched the shows you'll know what I mean).

None of the science being sabotaged was being published in peer reviewed journals was it? (besides the Portuguese hydrodynamic modeling stuff, but it could have been accidental or had other uses)

And yes, to be clear, I don’t consider it contributing to “science” if it’s not published, reviewed, and reproducible.

Nah; it's to prevent a country from developing a superweapon and possibly triggering WW3 / worldwide nuclear annihilation.

This comment is very exaggerated, I can think of a few more "morally corrupt" things to do.