"Finding Aaron Barr at this year's DEFCON hacker conference in Las Vegas was like a giant game of "Where's Waldo." Given the events of the past year, you can hardly blame him for keeping a low profile. First there was the attack on him and his then-employer, HBGary Federal, his decision to part ways with HBGary, his work to rehabilitate his image and turn his personal misfortunes into a 'teaching moment' for the industry, and then the legal wrangling in recent weeks that threw cold water on his plans to take part in a panel discussion about Anonymous at DEFCON. Barr was courted by numerous news outlets at the show, including the mainstream media. But he preferred, for the most part, to keep his own counsel. But he offered his thoughts to Threatpost on the experience of being at the conference, what the attack by Anonymous has done to him and whether it's possible for the group to turn its attentions to more constructive pursuits."