Crain's Chicago Business (Jan. 15) -- Pop into the Greektown office of Keeper Security and you'll see a mural of goblins trying to break into a safe. It's a metaphor for the company's password management and cloud storage app, which has attracted more than 6.5 million registered users. Business partner and Illinois alumnus Darren Guccione never set out to be an app developer. After earning a bachelor's degree in mechanical and industrial engineering from Illinois, he got a job at a bicycle manufacturer.