Removing secure data

How can I get a previous posting and question removed or edited to protect data that has been put-up. There seems to be no way to directly contact administrators or moderators or technical help without telling the world your arse in out in the air.
Also - how would a non-technical person using this site with a question or post actually know what personal (computer) data looks like. Seems prejudicial
Finding their system attacked through ignorance while Apple (knowingly) looks-on. Should discussions carry a better than "T&C" warning to users?