That trust was what led to this incident where someone just walked into the airplane dressed as a maintainence worker and nobody stopped him.

O, it can be even worse, when you realize its a 30 year old problem ...

During the 1998 television show Schalkse Ruiters, presenters Bart De Pauw and Tom Lenaerts dressed in fake pilot uniforms. They bypassed security at Brussels Airport (Zaventem), entered a Boeing cockpit, and left undetected to expose safety flaws

The TV show got cancelled not long after this incident because of pollical backlash.

The show had a reputation of finding security flaws (like being able to transfer money from people bank accounts) and other issues, but the airport one was the end of the show.

People loved the show, as it forced companies, ... make changes to their processes that they normally never did. They even did follow-up episodes to see if the companies actually made changes.

Bit of public shaming to fix security issues... worked great. Until the show was cancelled. The number one rated show of the country ... Yea, there was absolute no correlation between its cancellation and the airport incident. Really ;)