Dr. Brennan brings both an entrepreneurial spirit and deep technical background to his founding role as Chief Technology Officer of Bit9. Previously, Dr. Brennan founded Okena (acquired by Cisco in 2003), where he devised new techniques to defend against emerging computing threats. There he was also responsible for creating the company’s technical and market vision, assembling the management team, and raising capital. Prior to Okena, he was a research staff member of the Satellite Communications Division at MIT Lincoln Laboratory. Earlier, he was a software engineer in the VLSI Advanced Methodology group at Digital Equipment Corp. Dr. Brennan received his Ph.D. and M.S. degrees in Electrical and Computer Engineering from the University of Wisconsin, where he won numerous teaching awards, and holds a B.S. degree in Electrical Engineering from Cornell University.