I thought it typical of Qantas executives to pass the blame onto the outsourced services of the vetting agents. The vetting agents don't do Qantas's business, they just screen people, and anyone who has been through such a process would know that the younger you are the easier it is to get a clearance, unless you have been living under a rock all your life.
I wonder if these criminals used AN0M to conduct their nefarious business, perhaps there was no need and it's all there on the internal QF communications forums because of the convenience and the lax controls.