The PlayStation Store remained offline in Japan while Sony discussed the data breach with authorities and briefed them on its new security system, said Satoshi Fukuoka, a spokesman for Sony Computer Entertainment in Tokyo. With progress made in those discussions, Sony is now able to resume service.

When that happens on Wednesday, the service will be fully restored globally to the same level as before April's attack.

The attack and Sony's response to it is estimated to cost the company around ¥14 billion (US$170 million) this financial year, . That includes the cost of calling in several computer security companies to investigate the attack, the rebuild of its security system, identity theft monitoring for users in some countries, and the offer of several free games to users.

The IDG News Service