Sony executives apologized for a data breach in the company's PlayStation network that revealed personal information belonging to 78 million user accounts. At a Tokyo news conference, Kazuo Hirai, chief of Sony's PlayStation unit, bowed in apology and vowed that the company would increase security measures, adding that parts of the service would be back up and running this week. He and two other execs at the conference announced they would be offering compensation to users whose account info had been hacked, though they reiterated the company still had no evidence that credit-card details had actually been stolen, only names and addresses. The compensation deal would offer complimentary downloads and other free content, including 30 days of free membership to a premium service to current users, and would pay credit-card renewal fees in some regions. Sony said they had asked the U.S. Federal Bureau of Investigation to look into the breach and stepped up security measures.