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Dave has 30 years of industry experience. He has extensive experience in IT security operations and management. Dave is the Global Advisory CISO for 1Password. He is the founder of the security site Liquidmatrix Security Digest & podcast. Dave also hosts the Chasing Entropy Podcast. He was a member of the board of directors for BSides Las Vegas for 8 years. He currently serves on the advisory boards of Byos.io and Knostic.ai. Dave has previously worked in critical infrastructure for 9 years as well as for companies such as Duo Security, Akamai, Cisco, AMD and IBM. Previously he served on the board of directors for (ISC)2 as well as being a founder of the BSides Toronto conference. Dave was a DEF CON speaker operations goon for 13 years. Lewis also serves on the advisory boards for the Black Hat Sector Security Conference in Canada, and the CFP review board for 44CON in the UK. Dave has previously written columns for Forbes, CSO Online, Huffington Post, The Daily Swig and others. For fun he is a curator of small mammals (his kids) plays bass guitar, grills, is part owner of a whisky distillery and a soccer team.

Cybersecurity Consultant with over three years of hands-on industry experience, I specialize in offensive security—driven by a passion for uncovering and exploiting weaknesses before adversaries can. My work spans Red Team operations, Network Security, and Web/API Vulnerability Assessment & Penetration Testing (VAPT), with successful engagements across BFSI, IT Products & Services, and Healthcare sectors.With a strong research focus on Adversarial Tactics, Techniques, and Procedures (TTPs), I continuously explore emerging threat vectors and offensive methodologies to deliver actionable security insights that directly reduce business risk. My approach blends technical precision with creative attack strategies, ensuring organizations stay ahead of evolving cyber threats