San Francisco-based startup Bluebox, which claims to be "developing the next evolution in enterprise security technology," recently announced that it had raised $9.5 in funding from Andreessen Horowitz, Sun co-founder Andreas Bechtolsheim, Google board member Ram Shriram, former SPI Dynamics CEO Brian Cohen, and others.

"Enterprise security on mobile is an unsolved problem, and frankly, in need of innovation," Bechtolsheim said in a statement. "Bluebox is developing a solution that will change the way enterprises think of how to successfully and seamlessly protect their data."

"Bluebox executives are mum so far on exactly what the company's product offering will be, but the company's name offers an intriguing hint," writes Threatpost's Dennis Fisher. "A blue box is a device that's used by phone phreakers to confuse the long-distance phone system and game it for free calls. The mobile threat landscape has been changing rapidly in the last couple of years as the adoption of smartphones such as iPhones and Androids has exploded."

"At the helm of Bluebox is CEO and co-founder Caleb Sima, a serial entrepreneur who considers himself an old man in the security industry even though he’s just thirty-one," writes VentureBeat's Ricardo Bilton. "According to Sima, Bluebox was born out of the realization that, while mobile use is growing rapidly in the enterprise, security is not. 'When you are looking at mobile, security is one of the top critical concerns in terms of adoption,' Sima told VentureBeat."

"So what is Bluebox actually building? Details are sparse," writes TechCrunch's Sarah Perez. "They’re really not saying. But Sima promises it’s different. 'The technology is not anything you’ve ever seen before,' says Sima."