Book excerpt: Once upon a time, everything was fine. Humpty Dumpty sat on his wall, Jack and Jill went about their lawful business, the Big Bad Wolf did what big bad wolves do, and the wicked queen plotted murder most foul. But the humans hacked, cried havoc, shut down the wicked queen's system, and corrupted her database-and suddenly everything was not fine at all. But at least we know that they'll all live happily ever after. Don't we?