Matt Walker is an IT security and education professional with twenty-plus years in a variety of roles within IT security and education. He has written and contributed to numerous technical training books for NASA, Air Education and Training Command, and the US Air Force, as well as commercially, and he continues to train and write certification and college-level IT/IA security courses.
David Stifel was born and raised in Denver, Colorado. Bitten early by the acting bug, he studied his craft at the Yale School of Drama. After graduation, he found himself in the usual array of interesting day jobs such as casino porter at Lake Tahoe, ESL teacher in Iran, and Egypt, and video game programmer in the Atari/Intellivision era. Concurrently he worked in films and TV shows for such directors as Steven Spielberg (Minority Report), Danny Boyle (A Life Less Ordinary), and Joel Schumacher (The Number 23).David entered the audiobook field in 2011, when he launched a long-term podcast of serializations of the works of Edgar Rice Burroughs. Today he is a multi-award-winning narrator with more than 125 audiobooks to his credit. His growing catalog of audiobooks is strong on thrillers, horror, sci-fi, and mysteries. David's rich baritone voice also lends itself very well to nonfiction memoirs and history-popular and academic. His classical acting training makes him very strong with heightened literary language. Pegged as a "character actor" from youth, his facility with numerous characters is frequently praised by reviewers and listeners.