Gone Fishin'

While you are carefully guarding the front gates, don't forget you have an enemy who will cheerfully come in through the trash chute:

As long as enterprises rely on ad hoc solutions for disposing of retired IT assets, systems are going to end up in closets and warehouses wasting space until someone decides to get rid of them, often in a dumpster. To ensure proper management of old technology, enterprises must work with established IT asset recovery providers that handle the end-to-end process – reverse logistics, software asset inventory analysis and reporting, thorough data destruction, device refurbishment and resale, and finally, recycling.

We like a bulk erase and five holes through old hard drives. Tapes, paper, and floppies should be shredded. You know the drill :)