Daniel Somerfield has over 15 years of experience developing software for retail sales, corporate communications, enterprise development, and IT security and compliance. In 1997 he co-founded ISNetworks, a company specializing in digital signature and encryption technologies. While CEO of ISNetworks, he and business partner Jess Garms co-wrote several articles and a book titled dqdqProfessional Java Securitydqdq published by Wrox Press in 2001. He currently lives in San Francisco, working as a consultant at ThoughtWorks.