I'm pretty sure this was the first time Sabu's dox were outed after lulzsec rose. Interesting to look back on this now.
http://pastebin.com/raw.php?i=iVujX4TR
The A-Team that released Xavier (Sabu)'s docs claims to have acquired them by "backhacking" the compromised router hops that Sabu himself had been using, and following the trail back to him. Once they figured out how he got into the routers, they were able to do the same thing he did but in reverse and trace him down. At the time when this came out, I thought it was prolly bullshit but it turns out they were correct. At least the FBIs info says they were.
"Most people think time is like a river, that flows swift and sure in one direction. But I have seen the face of time, and I can tell you, they are wrong. Time is an ocean in a storm."