The security issues being raised on PPRuNe are done so because THIS is the ONLY forum where ALL of us - worldwide - can put our heads together and speak with one voice. To my knowledge no-one has discussed specifically classified information, which in some cases is available only to specific employees - the topics discussed here are something that all airport and airline employees have access to, either directly or indirectly.
Additionally, the manuals containing the sops for company employees are easily obtained from any company office and in most cases employees homes, so why spend hours ploughing through PPRuNe, when the whole lot can be found in one location?
Certainly some of the subjects may "alarm" the public, and new airline recruits, as they might APPEAR to be classified, however for any professional hijack/terrorist group it is stuff with which they will be thoroughly familiar.
I believe it is NECESSARY to publically highlight the weaknesses in our systems NOW, because if WE know about them, you can be sure that our opponents also will be aware.
It is unfortunate that the people who have been made responsible for OUR safety and security are not in consultation with US, but rather, dictate to us their hypotheses.
Airing the overtly deficient areas of security here on PPRuNe is more likely to gain an immediate fix, at a time when Time IS of the essence!