San Francisco -- Bluebox, a San Francisco-based start-up developing enterprise mobile security technology, said on Tuesday it has raised $9.5 million in its first round of funding, led by Andreessen Horowitz. Other participants included Andreas Bechtolsheim, the co-founder of Sun Microsystems and one of the first investors in Google; SV Angel; Google board member and investor Ram Shriram; and Brian Cohen, the former CEO of SPI Dynamics. Bechtolsheim and Scott Weiss, general partner at Andreessen Horowitz, have been named to the company's board of directors. "Enterprise security on mobile is an unsolved problem, and, frankly, is in need of innovation," said Bechtolsheim. "Bluebox is developing a solution that will change the way enterprises think of how to successfully and seamlessly protect their data." Caleb Sima, the company's co-founder and CEO, previously served as the CTO for HP's Application Security Center, while fellow co-founder Adam Ely was previously CISO of the Heroku business unit at salesforce.com.