Xbox Live not hacked

[UPDATE] Following the publication of this story, Microsoft confirmed with GameSpot that Xbox Live has not been hacked.

"Xbox Live has not been hacked," a company representative said. "Microsoft can confirm that there has been no breach to the security of our Xbox Live service."

The original story follows below

A hacker going by the name Reckz0r today claimed to have cracked Xbox Live, exposing confidential information for around 47 million users.

In a note posted on Pastebin, the hacker claimed to have "brutally owned" Xbox Live a few days ago, but decided to publish the data today.

Writing on Twitter, Reckz0r said Microsoft stores its passwords in a plaintext format. This person described the disbanded hacking group Lulzsec as "friends."

A Microsoft representative has told GameSpot to expect comment from the company shortly.

The hacking claims come just two days after Microsoft announced its next-generation platform, the Xbox One.