According to the Financial Times, the data may have only limited potential for hackers, but it shows that the breaches designed to embarrass major companies is set to continue.
The FT claims the Apple breach was publicised through a Twitter message from AnonymousIRC, one of many accounts associated with the hacktivist collective Anonymous.
"When [LulzSec] disbanded a week ago, it said some future attacks would be carried out by Anonymous and called on other hackers to continue the effort it calls AntiSec, for anti-security", notes the paper.
`Apple could be target, too. But don't worry, we are busy elsewhere', the paper adds, quoting Anonymous' Twitter messages.
"Apple had no immediate comment. On its face, the breach at the largest seller of music would seem far less serious than recent penetrations at big gaming companies such as Sony, which saw some details on 100m online game players revealed", says the FT.
Overnight newswires seem quiet on the issue, suggesting that Apple plans on its usual `no comment' policy on IT security matters.
The Gadgets & Gizmos newswire, however, says the Apple hack was a joint effort between Anonymous and AntiSec, a spin-off from the old LulzSec group.
"While it is not likely that the hack will cause damage to Apple, it will serve as a warning to the company that a major technology company is still not safe from attacks from Anonymous and other hacking groups", says the newswire.
This month, the newswire adds, LulzSec claimed it had accessed the servers of Apple's iCloud, which are used by Apple's cloud photo and music service that is to be launched later this year.
The group, asserts the newswire, did not post the information online.
"If you are an iPhone, iPad or any other Apple device owner, there’s no need to worry about your personal info getting out, but the regular changing of your passwords might help", adds the newswire.