Fact is, that pre-boarding security is completely hit or miss.
The other week, my other half decided that rather than pay globespan £8 or so for a cardboard lunch on our trip to egypt,... she would pack a gastronomic aerial picnic.
To my horror, I was served up one of the 2 M&S jellys..which had sailed through security without detection!!
I had removed my belt, shoes etc,..... but jelly is OK??
Add to that the fact that you can buy a pretty sharp Eifeil Tower model (with removable plastic tip protector!), at CDG... past security, and, that the Continental exec lounge (again airside), at EWR issues metal knives to spread your cheese, and,... bottled water is OK at SSH...just how secure is secure?