Great point, I think the tech crowd may overestimate the cost of glitches, relative to everything else at play in a business.

I think the point I'm getting hung up on is that the bank's stock price could drop for two reasons: bad PR due to the glitch, and/or falling financials due to fraud perpetrated as part of the glitch. I can completely understand a hedge fund trading and making money off the bad PR. But if (hypothetically) the bank lost a ton of money by hackers liquidating user accounts or, worse, making leveraged bets [before everyone checked for that sort of thing ;)], and the hedge fund knew there was a reasonable chance that the malicious activity would occur based on the newly disclosed information, would they have liability there? (from the theft/fraud perpetrated against the bank, not the drop in stock price)