More and more, frequent flyers are being asked to divulge sensitive information at all stages of flight. In some cases, time-crunched professionals are willing to make those concessions in order to expedite the process. But what happens to that information? Is there any danger of it falling into the wrong hands?

A study conducted by White Hat Technologies over a year ago at Denver International Airport seemed to indicate that the wireless LANs used for applications like curbside and roving agent check-in were vulnerable to hackers.

But a recent test indicates that the problem may have been fixed, at least with regard to American Airlines, whose system was considered the least secure.