Tenable Holdings, Inc. is a cybersecurity company based in Columbia, Maryland. Its vulnerability scanner software Nessus, developed in 1998, is one of the most widely deployed vulnerability assessment solutions in the cybersecurity industry.[1] As of December 31, 2023, the company had approximately 44,000 customers, including 65% of the Fortune 500.[1]
History
Tenable was founded in September 2002 as Tenable Network Security, Inc. by Ron Gula, Jack Huffard, and Renaud Deraison.[3] In April 1998, at age 17, Deraison had created the Nessus vulnerability scanner software, which he folded into Tenable upon creation of the company. In 2002, Gula, who worked for the National Security Agency in the 1990s, sold a company he founded to Enterasys Networks and was looking to start another company. In 2004, Marcus J. Ranum was hired as chief security officer.[4]