Tenable Network Security, Inc., the leader in Unified Security Monitoring (USM), today announced that it has been named one of the fastest-growing private companies by Deloitte in its annual Technology Fast 500 rankings. With an impressive 552 percent growth over the last five years, Tenable was ranked 171^st on the list overall – and was listed as the ninth fastest-growing company in the greater Washington/Baltimore area.

“The companies on the Fast 500 list are among those that have demonstrated remarkable innovation, creativity and business savvy,” said Bill Ribaudo partner, Deloitte & Touche LLP and national TMT leader for audit and enterprise risk services (AERS). “As a result, these companies have continued to successfully forge ahead in a challenging economic environment. We applaud the leadership and employees of Tenable Network Security for this impressive accomplishment.”

This recognition from Deloitte caps-off an outstanding year of growth and development for Tenable, arriving on the heels of the company’s $50 million Series-A funding from Accel Partners in September – one of the technology industry’s largest series-A investments of the year.

Earlier in 2012, the Tenable was selected by the Department of Defense as its Assured Compliance Assessment Solution, which has been deployed across the entire DoD and select Federal Intelligence agencies by the Defense Information Systems Agency. Further, in August, Tenable received a received a ‘Strong Positive’ rating in Gartner’s Vulnerability Assessment MarketScope, the highest possible rating given.

The Deloitte Fast 500 recognition is one of many awards for Tenable in 2012. In August, the company was recognized as one of the fastest-growing private companies by Inc. Magazine in its annual Inc. 5000 ranking. In May, Tenable was awarded the Baltimore SmartCEO VOLT Award in the "Cyber Warrior" category, recognizing the company as the top mid-size cybersecurity technology provider in the greater Baltimore area. Tenable was also awarded the Emerging Growth Company Award from ACG National Capital at the 2012 Corporate Growth Awards Gala in March.

“Our customers handle extremely sensitive information on some of the world’s largest and most complex networks – and we’re dedicated to helping them stay ahead of today’s emerging security challenges,” said Ron Gula, CEO of Tenable Network Security. “Our accomplishments stem directly from the technical talent of our team coupled with direct customer feedback. We’re committed to continuous innovation and delivery of industry-leading security technologies.”

Tenable helps enterprises and government agencies protect their networks from emerging vulnerabilities and threats, especially for mobile, cloud, and virtual technologies. The company’s continued success and momentum is based on its unique approach to network monitoring, which integrates SIEM, vulnerability management and compliance management into a single solution, enabling enables proactive network defense through round- the-clock, continuous monitoring and assessment.

Tenable’s automated solutions also streamline compliance reporting for top regulations like PCI, SOX and HIPAA by leveraging customizable, pre-packaged reports, and ensuring that key assets are regularly monitored.

About Deloitte’s 2012 Technology Fast 500™

Technology Fast 500, conducted by Deloitte & Touche LLP, provides a ranking of the fastest growing technology, media, telecommunications, life sciences and clean technology companies – both public and private - in North America. Technology Fast 500 award winners are selected based on percentage fiscal year revenue growth from 2007 to 2011.

In order to be eligible for Technology Fast 500 recognition, companies must own proprietary intellectual property or technology that is sold to customers in products that contribute to a majority of the company's operating revenues. Companies must have base-year operating revenues of at least $50,000 USD or CD, and current-year operating revenues of at least $5 million USD or CD. Additionally, companies must be in business for a minimum of five years, and be headquartered within North America.

About Tenable Network Security

Tenable Network Security is relied on by security and compliance professionals at many of the world’s largest companies and governments, including the entire U.S. Department of Defense, to stay ahead of emerging vulnerabilities, threats and compliance-related risks. Its Nessus and SecurityCenter solutions continue to set the standard for identifying vulnerabilities, preventing attacks and complying with a multitude of regulatory requirements. http://www.tenable.com