Security not an Afterthought

You wouldn’t build a house and then add electricity after the fact. It would end up costing you much more. You would need to rip out the walls to install the wiring. The inspections done by the local authorities need to take place as the building is going up to insure that the installation is safe.
The same is true for security in the projects at work. Security is most effective when planned and implemented throughout the entire lifecycle.