WESTFORD, Mass. – November 15, 2012—NetScout Systems, Inc., today announced the company ranked #402 on Deloitte’s Technology Fast 500™, a ranking of the 500 fastest growing technology, media, telecommunications, life sciences and clean technology companies in North America. According to Deloitte, NetScout grew 184 percent during this period. NetScout was ranked 44th in the communications/networking category. “We are proud to honor the 2012 Technology Fast 500 companies, and commend them for their outstanding growth,” said Eric Openshaw, vice chairman, Deloitte LLP and U.S. technology, media and telecommunications (TMT) leader. "These ground-breaking companies have outpaced their competition and are reinventing the way we do business today.” “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 NetScout for this impressive accomplishment.” With a sustained 28-year history of technology leadership, NetScout is changing how organizations manage and optimize the delivery of consumer and business applications and services across global IP networks. Today, more than 90 percent of the Fortune 100 enterprise companies and 148 service providers in 46 countries around the world use NetScout’s nGenius Service Assurance Solution. The nGenius solution enables comprehensive, real-time visibility into network, application and service performance to assure the user experience and obtain rich business and operational intelligence. “We are honored to be included in the Deloitte 2012 Technology Fast 500. This recognition highlights our execution over several years in a dynamic and competitive market,” said Steven Shalita, vice president of marketing, NetScout. “NetScout is focused on innovation across our portfolio to drive a shift from traditional component-oriented performance management to a unified approach of managing services from the delivery perspective. Our approach enables customers to achieve a more holistic view of application and service delivery. Our customers benefit from being able to more effectively optimize their infrastructure, accelerate the deployment or delivery of new applications and services and reduce the cost and complexity of IT service delivery.” 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 NetScout Systems, Inc. NetScout Systems, Inc. (NASDAQ: NTCT) is the market leader in Unified Service Delivery Management enabling comprehensive end-to-end network and application assurance. For 28 years, NetScout has delivered breakthrough packet-flow technology that provides trusted and comprehensive real-time network and application performance intelligence enabling unified assurance of the network, applications and users. These solutions enable IT staff to predict, preempt and resolve network and service delivery problems while facilitating the optimization and capacity planning of the network infrastructure. NetScout nGenius and Sniffersolutions are deployed at more than 20,000 of the world’s largest enterprises, government agencies, and more than 148 service providers, on more than one million physical and 2,000 virtual network segments to assure network, applications, and service delivery to their users and customers. For more information about NetScout, go to www.netscout.com. NetScout, nGenius, and Sniffer are registered trademarks of NetScout Systems, Inc.