Netwitness

In the mid-1990s the NetWitness technology was established by CTX Corporation, a Washington, D.C.–based system integrator. The technology, initially chartered as a US Government research project, was created to help analysts better understand large volumes of captured network data for various types of investigations. CTX Corporation was subsequently acquired by ManTech International Corporation (Nasdaq: MANT) in December 2002.

In November 2006, ManTech International Corporation incubated and spun out its NetWitness information security product group as the venture-funded NetWitness Corporation. NetWitness focused on network forensics and content-analysis technology for incident response, investigations, and insider-threat related activities.

In February 2010, NetWitness announced the discovery of a major ZeuS botnet infestation impacting roughly 2,400 companies across the globe. The company dubbed this botnet the “Kneber ZeuS botnet” after the criminal gang was involved. This news went viral as it shed light on the continued vulnerabilities of the world's corporate Information Security practices and provided a deep dive understanding of the inner-workings of a botnet.

NetWitness Visualize, announced in July 2010, provided a new way to visualize network traffic.

In August 2010, NetWitness was named the 21st fastest growing private company in the United States in the annual Inc 500 report. With 7,745.8 percent three-year growth, the company was also ranked as the fastest growing privately held enterprise security product company and the fastest growing company in the Washington, D.C. area.

On April 1, 2011, NetWitness was acquired by EMC Corporation for an undisclosed amount. Former NetWitness products were integrated into EMC's security division, RSA Security.

NetWitness’ CEO, Amit Yoran, was formerly Director of the Department of Homeland Security’s National Cyber Security division.

On March 17th, 2025, NetWitness was acquired by PartnerOne.