Web Application Security, A Beginner's Guide

EPILOGUEThe Wizard, the Giant, and the Magic Fruit Trees: A Happy Ending

When we last visited our hero the wizard, he was in sad shape. Vandals and thieves had wrecked his magic fruit trees, and so he conjured up a lava moat to surround the enchanted orchard and keep the intruders away. Unfortunately, the lava moat also kept out the good villagers who came to the orchard to pick fruit (and, not coincidentally, to buy potions from the wizard).

To solve this problem, the wizard invited his friend the giant to live in the orchard. The giant was tall enough and strong enough to jump over the lava moat, so whenever one of the villagers wanted a piece of fruit, he could simply shout his request to the giant and the giant would fetch the fruit for him. ...