[tomp]

Hmm... I'm not sure I see this the same way. The impact on the price by a single investor shorting the stock (even a leveraged hedge fund) will be minimal. Furthermore, the only way for said investor to actually make a profit is to make other investors agree (i.e. to essentially anticipate their actions), so they do need to publicise the vulnerability. Still, they're taking a risk because other investors might not see the vulnerability as critical or otherwise worthy of a lower valuation.