The list was posted to the Pastebin website, a hosting site for text files, by an unidentified user under the title "Not Yet Serious." It wasn't immediately clear if the user was allied with the Anonymous hacking group, but the existence of the file became widely known after Anonymous linked to it in a Twitter message.

"Not being so serious, but well," the message read before linking to the . "Apple could be target, too. But don't worry, we are busy elsewhere," the message said.

The data appears to be a set of user names and encrypted passwords from an SQL database for an online survey at the Apple Business Intelligence website. The site is currently offline.

Apple did not immediately respond to a request for comment.

In an apparently unrelated posting, a Lebanese grey-hat hacker called idahc_hacker he had found vulnerabilities on another Apple website. The SQL injection and iFrame code attacks can be used by hackers to gain unauthorized access to data.