I would tend to doubt it. I suspect that by the time Folding@home came along, the boys at Fort Detrick could have installed their own screen savers on the NSA's ginormous systems without exposing anything to the public.

In any case, the primary work on weaponizing prions seems to have already been done half a century earlier by Daniel Carleson Gadjusek under the guise of "kuru research".

On that wiki page, they wave their hands around about what the guy was really up to, but for anyone interested, I briefly put together the main pieces in a comment in this post:

Alzheimer’s passed to patients from cadavers (r/conspiracy 2/2/2024)

And yeah, for those not aware, Alzheimer's is also the result of these weaponized prions, and you can get it from cadavers. Surprise!