EMC Corp., a Hopkinton, Mass., maker of IT infrastructure products, has bought a Virginia company — NetWitness Corp. — owned by an Indian American entrepreneur.

NetWitness, founded by Amit Yoran, is a provider of network security analysis products. Its products provide precise and pervasive network visibility, enabling security teams to detect and remediate advanced threats while automating the incident investigation process, according to the company. Companies use NetWitness products to solve a wide range of information security problems including: insider threats, zero-day exploits and targeted malware, advanced persistent threats, fraud, espionage, data leakage, and continuous monitoring of critical security controls. NetWitness customers include businesses in sectors such as financial services, power and energy, telecommunications, retail, and high-tech, as well as government agencies in defense, homeland security, law enforcement and intelligence.

NetWitness will operate as part of RSA, EMC’s security division.