Though Apple has not officially confirmed the authenticity of the data that the hackers say they have, an Apple spokesperson told Fortune in an emailed statement that, if the list is legitimate, it was not obtained through any hack of Apple. "There have not been any breaches in any of Apple's systems including iCloud and Apple ID," the spokesperson said. "The alleged list of email addresses and passwords appears to have been obtained from previously compromised third-party services." A person familiar with the contents of the alleged data set said that many of the email accounts and passwords contained within it matched data leaked in a past breach at LinkedIn.