More details from Brian Krebs' blog post - http://krebsonsecurity.com/2013/10/adobe-to-announce-source-...

  "KrebsOnSecurity first became aware of the source code leak roughly one week ago...with fellow researcher Alex Holden...discovered a massive 40 GB source code trove stashed on a server used by the same cyber criminals believed to have hacked into major data aggregators earlier this year, including LexisNexis, Dun & Bradstreet and Kroll."

  "The hacking team’s server contained huge repositories of uncompiled and compiled code that appeared to be source code for ColdFusion and Adobe Acrobat."