Kazuo Hirai, Sony Corp.'s second-in-command, in line to become its CEO, will brief the media on the catastrophic security breach in the PlayStation Network. The news conference will be held at 1 a.m. EDT (2 p.m. in Japan). Hirai will discuss Sony's investigation of the breach, its information management system, and the schedule for bringing PSN back online, Sony said in a news release today.