Sony's popular PlayStation Network is still down, five days after it was hacked.br br It has become a major embarrassment for the gaming giant, with no word yet from Sony on when it will be back online. br br The Network, for Playstation 3 consoles, is used by about 70 million people worldwide. br br John Biggs is the editor-in-chief of CrunchGear, a blog about gadgets, games, and tech culture. He says the online attack happened after some of Sony's network passwords were leaked.