Bitstamp have been running a fractional reserve for years. This hack story is an obvious lie, copied from Karpeles. During the next weeks we'll learn about Stamp's insolvency. Then they'll declare bankruptcy, and all your precious coins and fiat will be lost.
You have no proof, don't ya?

And if the story was true: What's stopping the thieves from hacking them again, stealing even more?
Maybe closing the security hole that allowed them to be hacked?
