What do you do with something that's too powerful to be safely used, but too valuable to simply destroy? What do you do with a doomsday device, if it might one day save the world? The White Box network have assumed the responsibility of ensuring that some of the most powerful magical and technological items ever created don't fall into the wrong hands, while preserving them until the day they are needed.
Of course, the custodians of the White Boxes have problems of their own. Like people who think ancient artifacts and modern technology should be open to the world, and those who want it all for themselves. When their enemies start networking, it might be too big a challenge to keep everything inside the box.