An anonymous reader writes to tell us that Blizzard has added another victory in their campaign against World of Warcraft bots. A federal judge has ruled that not only did the Glider bot break the EULA, it can be classified as a circumvention device under the DMCA. "As we've noted before, Blizzard's legal arguments, which Judge David G. Campbell largely accepted, could have far-reaching and troubling implications for the software industry. Donnelly is not the most sympathetic defendant, and some users may cheer the demise of a software vendor that helps users break the rules of Blizzard's wildly popular role playing game. But the sweeping language of Judge Campbell's decision, combined with his equally troubling decision last summer, creates a lot of new uncertainty for software vendors seeking to enter software markets dominated by entrenched incumbents and achieve interoperability with legacy platforms."