My question is due to us getting bombarded every 2 days now with CME's coming from the sun, the next one scheduled to hit earth tomorrow is that something I could be using for promotional stuff?
You would just make a fool of yourself. Most computer cases are actual faraday cages, if properly grounded (and within there are plenty more, hdds for instance). Not to protect against external radiation but to shield
you nearby licensed radio operations against EM emission from within the case.
Now "cosmic bombardment". Those very fast protons hit our atmosphere (causing nice looking aurorae) and decay mostly to muons at ground level. Bad news, there is no reasonable way to avoid them. Even if you put your safe deep beyond a mountain, they will get ya.
Fixed that for ya. Not even the crazies think that RFI from a computer is harmful to humans any more, but the FCC takes a dim view of anything that interferes with licensed radio systems. They'd fine the sun for harmful interference if they could.
And my understanding was that muons were just a tiny bit harder to stop than beta rays, since they have the same electrical interactions, just a (lot) more mass. The real problem is X-rays (or gamma rays, or cosmic rays, depending on which decade your physics textbook was written in), since they can penetrate
and ionize.
But that is mostly a problem for solid state storage, which brings us back to deepceleron's point, that the real protection needed is on the power line.
Hmm. I wonder if my coil winder is big enough to make a ferroresonant transformer big enough for the whole house.