Company Story
2002 - Tenable Network Security, Inc. founded by Ron Gula, Jack Huffard, and Renaud Deraison
2003 - Nessus vulnerability scanner launched
2005 - Tenable raises $10 million in Series A funding
2010 - Tenable introduces Nessus 4.0 with real-time vulnerability analysis
2012 - Tenable raises $50 million in Series B funding
2015 - Tenable introduces Nessus 6.0 with advanced analytics
2018 - Tenable goes public with IPO, listing on the NASDAQ stock exchange under the ticker symbol TENB
2020 - Tenable acquires Alsid, a provider of Active Directory security solutions