Hardware too
Besides normal amount of hardware errors, equipment that is outside of our protective atmosphere is subjected to a cornucopia of nasty stuff, all of which can induce a charge ranging in intensity from insignificant to enough to blow chips off the board. There is a bias toward the low level events, with the probability curve looking like a slope.
While charged particles are a constant issue, it was a big surprise to find out that non-ionizing radiation striking ferrous materials produces an incredible amount of ionizing radiation which is lethal to computer and bio-critter alike. The trouble is that it it comes from a system board fastener, the resulting radiation source is very close to the area where it can do the most harm.
