"No luggage and high price last minute ticket payed cash." For Amsterdam that's not so surprising. It's the kind of destination many people go to for one night or even a few hours I would think. No matter what you do, even were you to invest 10 times more in security, some would still slip through. It's probabilities and statistics.
Donald Trump: Israeli settlement construction in West Bank should 'keep going' (Haaretz)
from the article: Israeli firm blasted for letting would-be plane bomber slip through