As vice president of research and intelligence for Verizon Business and chief scientist of ICSA Labs, Dr. Tippett is regarded as a top security thinker. He is best known for his creation of enterprise risk metrics and widely credited with creating the first commercial AV product that later became Norton Anti-Virus. He was CTO of Cybertrust, Chairman of truSecure and in the early 90’s directed the enterprise and security products group at Symantec. During the early 80's. Tippett ran one of the largest open-source (shareware) bulletin boards.