Sony Corp's logo is seen on its PlayStation controller at its showroom in Tokyo in October 2010. An outage on the PlayStation network entered its sixth day on Monday. ((Kim Kyung-Hoon/Reuters))

The outage of Sony Corp.'s PlayStation Network ran into its sixth day Monday as the company said it has no time frame for restoring the internet-based system that links users in live game play worldwide.

In a blog post Monday, Sony spokesman Patrick Seybold said from he couldn't predict when rebuilding work would be completed, but that it's a "time intensive process."

The company said on Thursday that it would take a "full day or two" to restore service after it first shut down the system that serves both PlayStations and its Qriocity entertainment services the previous day.

It subsequently blamed the outage on an "external intrusion" and said it would have to rebuild its system to add security measures and strengthen its infrastructure.

Satoshi Fukuoka, a spokesman for Sony Computer Entertainment in Tokyo, told PCWorld that the company "has not yet determined if the personal information or credit card numbers of users have been compromised, but that Sony would promptly inform users if it found that was the case."