I don't think it's fair to plant a seed of doubt in the minds of prospective CSC clients when you have no proof that this latest CC scare of yours has anything to do with them. Yes they got hacked however long ago, but like you said, it happens.
If you want to go on a tangent about internet shopping security, I'm sure CSC would appreciate you leaving their name out of it, unless you have something to substantiate that they have anything to do with it.
Word of mouth is important on this board, and if you appreciate their excellent service the way you say you do, I would think twice about insinuating something that could potentially cost them business.