It resulted in the compromise of over one million user accounts, complete with usernames, passwords, email addresses, birth dates and home addresses, and all the other data required by Sony when signing up for the service, as well as the Sony BMG databases with details of Belgian and Dutch customers.
"Among other things, we also compromised all admin details of Sony Pictures (including passwords) along with 75,000 'music codes' and 3.5 million 'music coupons'," claims the group on its website, where they published part of the stolen information and made some of it available on torrents.
"Our goal here is not to come across as master hackers, hence what we're about to reveal: SonyPictures.com was owned by a very simple SQL injection, one of the most primitive and common vulnerabilities, as we should all know by now," say the hackers.
"What's worse is that every bit of data we took wasn't encrypted. Sony stored over 1,000,000 passwords of its customers in plaintext, which means it's just a matter of taking it. This is disgraceful and insecure: they were asking for it."