There seems to be an amusing correlation between the history of the fight between Kevin Mitnick and Tsutomu Shimomura as portrayed in the movie Takedown and the goings on with Anonymous and HBGary. In the same way as the "expert", Shimomura, was hacked by Mitnick, HBGarry was hacked a while ago after annoying the group. By means of getting in through the company website via an SQL injection attack, breaking unsalted hashed passwords via rainbow lookup tables and some social engineering, they managed to download the company emails and splashed them all over the Internet.
What is yet to play out, is will Anonymous members be caught in the same way as Mitnick was by Shimomura.
Here is an interview with Mitnick which has a few comments about the related Lulzsec group. Amusingly, Mitnick is asked whether he can track them down if he were paid $1 million. I think that he side stepped that question carefully by not insulting the group and making himself a target, as HBGary did.