Dave Lewis has twenty five years of industry experience. He has extensive experience in IT security operations and management including a decade dealing with critical infrastructure security. Lewis is a Global Advisory CISO for Duo Security (now Cisco). He is the founder of the security site Liquidmatrix Security Digest and cohost of the Liquidmatrix podcast as well as the host of the Plaintext and Murder Board podcasts. Lewis serves on the advisory boards for several firms. He is currently enrolled in a graduate program at Harvard University. Lewis writes columns for Daily Swig, Forbes and several other publications.