Rarely in the history of the cybersecurity industry has a company become so toxic so quickly as HBGary Federal. Over the last week, many of the firm’s closest partners and largest clients have cut ties with the Sacramento startup. And now it’s cancelled all public appearances by its executives at the industry’s biggest conference in the hopes of ducking a scandal that seems to grow daily as more of its questionable practices come to light. Last week, the hacker group Anonymous released more than 40,000 of HBGary Federal’s emails, followed by another 27,000 from its sister company, HBGary, over the...