CEO of Duo Security. Duo Security is the easiest two-factor authentication service to deploy, manage, and use. Duo’s service can be set up in as little as 15 minutes to protect an organization at any scale. Over 5,000 organizations in over 80 countries rely upon Duo to prevent account takeover and data theft, including some of the most security-conscious organizations on the planet along with 3 of the top 5 social networks. Learn more and try it for free at www.duosecurity.com.