It's revealed both the Department of Homeland Security and FBI are investigating. Friday, April 29th: The US House of Representatives' Subcommittee on Commerce, Manufacturing, and Trade — send a letter to Hirai along with a list of questions and concerns. Saturday, April 30th: Sony announces a press conference for the following day. Sunday, May 1st: Kaz Hirai holds an afternoon press conference in Tokyo to outline what portions of the PlayStation Network will be restored this week and do introduce the forthcoming "Welcome Back" program. The investigation brings light that Sony Online Entertainment was also breached. Monday, May 2nd: SOE servers are shut down. Later that afternoon, the company issues a press release announcing the extent of the breach. Tuesday, May 3rd: Blueberry pie! No, not really. Wednesday, May 4th: Hirai sends an eight-page response to Congress.