While Boeing totally screwed the pooch on this one, and I won't be choosing to fly on one if I can, the public having more confidence in a system than its creators/domain experts isn't exactly uncommon. Would you trust your medical record privacy to Windows XP running AVG?

To my knowledge, we don't actually know that. None of the emails I've seen refer to anyone's title or name. For all I know it's a janitor who heard rumors around a water cooler.