You don't need lax airport screening to create security risks aboard flights. As the TSA found out, you just need someone to post the wrong details on the internet. The Wall Street Journal has learned that a United Airlines (yes, it's in the news again) flight attendant mistakenly posted cockpit door access codes online. While the Air Line Pilots Association says the situation has been resolved, the codes haven't changed yet. Until then, pilots will have to be extra-cautious -- they're already supposed to look at would-be visitors, but they just got a reminder that they can't take a valid code for granted.