There's all sorts of hacked computer systems out there relying on Security by Obscurity that provide free practice to the script kiddies.
But given that bin Liner & Co showed enough brain cells to pull off 9/11 (locked cockpit door policy and all), it is safer to assume they can figure out the same holes we can.
If we keep these holes quiet, then one day some unlucky crew and pax will find out the hard way.
Jumping air crew on the way back in and locking yourself behind a "secure" door doesn't take much in the way of imagination.
What frightens me is the apparent willful blindness of the security establishment to this obvious scenario.
It's gotta be a double door, preferably before the live demonstration
