Hacker-for-hire firms like NSO Group and Hacking Team have become notorious for enabling their customers to spy on vulnerable members of civil society. But as far back as a decade ago in India, a startup called Appin Technology and its subsidiaries allegedly played a similar cyber-mercenary role while attracting far less attention. Over the past two years, a collection of people with direct and indirect links to that company have been working to keep it that way, using a campaign of legal threat...