The undead really are everywhere at the moment – even up in orbit. Zombiesat is the delightful (and, one assumes, largely unofficial) term for the state of defunct communications satellite Galaxy 15, which has recently stopped responding to control commands, and is now shambling toward the orbits of other (still-functional, and presumably expensive) comsats…
… though probably not in search of brains. Even so, if you can’t get a sort of flippant but fun Charlie-Stross-meets-Ben-Bova story out of this one, you’re probably not trying.