cybersecdirectory

NDR vendors in the United States

23 of the 30 NDR vendors we list are based in the United States. 2 are public, 6 are owned by another company and 15 are private. The oldest, NETSCOUT, was founded in 1984. By revenue from annual reports, the largest company here is Fortinet ($6.8bn in FY2025).

Companies focused on network detection and response in the United States

10 companies
CompanyBased inFoundedSizeOwnershipRevenue
ARIA Cybersecurity

ARIA Cybersecurity provides AI-driven threat detection and response solutions for IT and OT infrastructure.

Lowell, United StatesOwned by CSPi
Corelight

Corelight provides network detection and response solutions for cybersecurity teams.

San Francisco, United States2013Private
ExtraHop

ExtraHop provides network detection and response for security and performance.

Seattle, United States2007Owned by Bain Capital and Crosspoint Capital Partners
Fidelis Security

Fidelis Security provides cybersecurity solutions for enterprises and government agencies.

Riverside, United States2003Owned by Partner One
Lumu

Lumu provides network detection and response to identify and stop cyber threats in real time.

Doral, United StatesPrivate
NetWitness

NetWitness provides cybersecurity platforms for threat detection, investigation and response across IT and OT environments.

Riverside, United States1997Private
PathSolutions

PathSolutions sells TotalView, a network operations intelligence platform.

Santa Clara, United States1998Private
Progress

Flowmon network detection and response, plus MOVEit file transfer, Kemp LoadMaster load balancing, ShareFile, Chef, Telerik and other business software.

Burlington, United StatesPrivate
Stamus Networks

Stamus Networks provides network detection and response systems for enterprise security teams.

Indianapolis, United States2014Private
Vectra AI

Vectra AI provides AI-native security and observability to detect and respond to cyber threats.

San Jose, United States2011Private

Also active in network detection and response

13 companies
CompanyBased inFoundedSizeOwnershipRevenue
Fortinet

Fortinet provides cybersecurity solutions and services, including networking and security convergence, for enterprises and governments.

Sunnyvale, United States200015,109 staffPublic, FTNT$6.8bn (FY2025)
NETSCOUT

NETSCOUT provides real-time network visibility, observability, cybersecurity, and DDoS protection solutions.

Westford, United States1984Public, NTCT$859.5m (FY2026)
AtlasCyber

Provides agentic threat intelligence and validation for critical infrastructure security teams.

Merrimack, United StatesPrivate
Claroty

Claroty provides cybersecurity for cyber-physical systems in industrial, healthcare, and commercial settings.

New York, United StatesPrivate
Exabeam

Exabeam provides security operations platforms that use behavioural analytics to detect and respond to threats.

Broomfield, United States2013Owned by Thoma Bravo
Galvanick

Galvanick provides behavioral threat detection for operational technology environments.

Seattle, United StatesPrivate
GreyNoise Intelligence

GreyNoise Intelligence provides real-time network threat intelligence.

Washington, D.C., United States2017Private
Hillstone Networks

Hillstone Networks provides cyber security products including firewalls, threat detection and cloud workload protection.

Santa Clara, United StatesPrivate
Infoblox

Infoblox provides networking and security software for DNS, DHCP and IP address management.

Santa Clara, United StatesPrivate
Nozomi Networks

Nozomi Networks provides OT and IoT security solutions for critical infrastructure, offering asset visibility and threat detection.

San Francisco, United StatesOwned by Mitsubishi Electric
Ordr

Ordr provides a platform that discovers and enforces security policies for connected devices across IT, IoT, OT, and IoMT.

Santa Clara, United States2015Private
Stellar Cyber

Stellar Cyber provides an AI-native security operations platform that unifies detection and response tools.

San Jose, United States2015Private
Elisity

Elisity provides identity-based microsegmentation software to contain lateral movement across enterprise networks.

Dallas, United States2018Owned by IonQ

More NDR vendors

All 30 NDR vendors

Every cybersecurity company in the United States · See every category