TOKYO -- Sony Corp. said Tuesday that some users' personal information had been compromised in a hacker attack as the outage of its global PlayStation Network entered a seventh day.

The company confirmed that an "external intrusion" by hackers disrupted the service, affecting more than 75 million users worldwide who use it to play video games against friends, stream movies and shop online.

"We have discovered that between April 17 and April 19, 2011, certain PlayStation Network and Qriocity service user account information was compromised in connection with an illegal and unauthorized intrusion into our network," the company said in a post on the official PlayStation blog.

Hackers may have obtained users' names, home addresses, email addresses, birthdates, PlayStation Network usernames and passwords, and answers to password security questions, according to the blog post.

There was no evidence that credit card information had been compromised, but Sony said it "cannot rule out the possibility" that hackers could access such information.

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