The network security industry is critical for protecting digital assets against increasing cyber threats. Companies in this sector focus on safeguarding data and maintaining privacy through innovative technologies. Their offerings range from antivirus software to advanced firewalls and threat detection services. As businesses embrace digital transformation, the demand for robust security solutions continues to rise. Moreover, with the rapid growth of remote work and the Internet of Things, network security measures are evolving in tandem, emphasizing multi-layered protection strategies and incident response planning.

This list features 22 noteworthy companies in the U.S. network security sector, ranging in size from small teams to organizations employing several thousand. Founded since 1987, these companies have established headquarters in key tech hubs like San Jose, Seattle, and Chicago. Their work includes a variety of specialties, such as managed security services, threat intelligence, and cloud security solutions, addressing complex security challenges across industries.

Continue reading to explore the top network security companies in the US.

Top 22 Network Security Companies in the US

1. WatchGuard Technologies

• Website: watchguard.com
• Ownership type: Private Equity
• Headquarters: Seattle, Washington, United States (USA)
• Employee distribution: United States (USA) 31%, India 24%, Spain 13%, Other 32%
• Latest funding: April 2022
• Founded year: 1996
• Headcount: 1001-5000
• LinkedIn: watchguard-technologies

WatchGuard Technologies, Inc. is a cybersecurity firm based in Seattle, Washington, specializing in network security solutions. Established in 1996, the company has built a reputation for providing a wide array of products aimed at safeguarding businesses from cyber threats. Their offerings include firewalls, endpoint security, and managed services, catering to organizations across various sectors that require robust security measures. WatchGuard has deployed nearly a million integrated threat management appliances globally, showcasing their extensive reach and operational scale. The company emphasizes a unified security platform that simplifies security management for its clients, allowing for better protection against evolving cyber threats. With a workforce of approximately 1,200 employees and a presence in multiple countries, WatchGuard continues to innovate and adapt to the changing landscape of cybersecurity, making it a notable player in the industry.

2. Mandiant Security Validation

• Website: fireeye.com
• Ownership type: Private Equity
• Headquarters: Mclean, Virginia, United States (USA)
• Latest funding: $1.2B, June 2021
• Founded year: 2014
• Headcount: 51-200
• LinkedIn: secvalidation

Mandiant Security Validation, operating under the umbrella of FireEye, is a cybersecurity firm based in McLean, Virginia. Founded in 2014, the company specializes in a range of security solutions, including threat intelligence, incident response, and managed defense services. Mandiant's offerings are particularly valuable to businesses in sectors such as healthcare and finance, where safeguarding sensitive information is critical. The company has made significant strides in the industry, especially with its focus on security validation, which helps organizations assess and improve their security measures against evolving cyber threats. In June 2021, Mandiant secured $1.2 billion in funding, underscoring its growth trajectory and the trust investors place in its mission to enhance cybersecurity for its clients.

3. SonicWall

• Website: sonicwall.com
• Ownership type: Corporate
• Headquarters: Milpitas, California, United States (USA)
• Employee distribution: India 40%, United States (USA) 30%, China 7%, Other 22%
• Latest funding: June 2016
• Founded year: 1991
• Headcount: 1001-5000
• LinkedIn: sonicwall

SonicWall, headquartered in Milpitas, California, is a cybersecurity firm that has been operational since 1991. The company provides a comprehensive suite of network security products and services, including advanced firewalls, secure VPN solutions, and cloud security offerings. SonicWall primarily serves businesses and organizations that need to safeguard their networks against a variety of cyber threats while ensuring compliance with industry regulations. With a significant portion of its workforce based in India, the company has a global presence and continues to innovate in response to the changing landscape of cybersecurity. SonicWall's commitment to protecting its clients from cyber risks positions it as a relevant entity in the network security sector.

4. Barracuda

• Website: barracuda.com
• Ownership type: Private Equity
• Headquarters: Campbell, California, United States (USA)
• Employee distribution: United States (USA) 47%, India 21%, United Kingdom (UK) 10%, Other 23%
• Latest funding: April 2022
• Founded year: 1999
• Headcount: 1001-5000
• LinkedIn: barracuda-networks

Barracuda Networks, Inc., founded in 1999 and based in Campbell, California, is a cybersecurity company that specializes in protecting digital assets for businesses across various sectors. With a workforce of over 2,100 employees, Barracuda provides a range of solutions that include email protection, data protection, network security, and application security. Their products are designed to safeguard organizations from a multitude of cyber threats, including spam, malware, and advanced persistent threats. Barracuda operates primarily through a Software-as-a-Service (SaaS) model, allowing for scalable and efficient deployment of their security solutions. The company has a significant presence in the market, serving hundreds of thousands of customers worldwide, and continues to innovate with offerings like Managed XDR, which provides 24/7 managed security services. Their focus on sectors such as healthcare, education, and financial services highlights their commitment to addressing the unique security challenges faced by different industries.

5. Optiv

• Website: optiv.com
• Ownership type: Private Equity
• Headquarters: Denver, Colorado, United States (USA)
• Employee distribution: United States (USA) 63%, India 33%, Canada 4%
• Latest funding: Other (Debt), May 2023
• Founded year: 2015
• Headcount: 1001-5000
• LinkedIn: optiv-inc

Optiv Security, Inc., founded in 2015 and based in Denver, Colorado, is a cybersecurity consulting firm that provides a comprehensive suite of information security services and solutions. With a workforce of over 2,300 employees, Optiv serves a wide range of industries, helping organizations navigate the complexities of cyber threats and compliance requirements. Their offerings include advanced detection and response, cloud security, identity management, and risk assessment, among others. Optiv's commitment to enhancing cybersecurity posture is evident in their focus on building resilience and ensuring compliance with regulations such as GDPR and PCI DSS. The company has established a significant presence in the market, serving approximately 6,000 clients, including a notable percentage of Fortune 100 companies. Their strategic partnerships with numerous technology vendors further bolster their ability to deliver effective cybersecurity solutions.

6. Comodo

• Website: comodo.com
• Ownership type: Private
• Headquarters: Clifton, New Jersey, United States (USA)
• Founded year: 1998
• Headcount: 1001-5000
• LinkedIn: comodo

Comodo, based in Clifton, New Jersey, is a cybersecurity company that has been operational since 1998. The firm specializes in providing a broad spectrum of security solutions tailored for businesses and organizations across various sectors. Their offerings include advanced malware protection, web application firewalls, and managed detection services, all designed to safeguard digital assets against evolving cyber threats. Comodo operates on a subscription-based model, delivering cloud-native security services that cater to the needs of modern enterprises. The company has developed a reputation for its innovative technologies, such as the Dragon Platform, which provides endpoint detection and response built on a Zero Trust architecture. With a workforce of over 1,400 employees, Comodo continues to play a vital role in the cybersecurity industry, helping clients navigate the complexities of digital security.

7. Trustwave

• Website: trustwave.com
• Ownership type: Corporate
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 36%, Poland 17%, Australia 14%, Other 34%
• Latest funding: November 2024
• Founded year: 1995
• Headcount: 501-1000
• LinkedIn: trustwave

Trustwave, founded in 1995 and headquartered in Chicago, Illinois, is a cybersecurity firm that specializes in protecting organizations from cyber threats. With a workforce of approximately 1,000 employees, Trustwave offers a comprehensive suite of services, including managed detection and response, incident response, and database security. The company serves a variety of sectors, such as financial services, healthcare, and retail, demonstrating its capability to address the unique security needs of different industries. Trustwave operates globally, with a significant presence in the United States, Poland, Australia, and the Philippines. Their proactive approach to cybersecurity is underscored by their SpiderLabs team, which consists of ethical hackers and security researchers dedicated to threat detection and response. Trustwave's commitment to innovation and security has earned them accolades from industry analysts, reinforcing their position as a significant player in the cybersecurity market.

8. Blue Coat Systems acquired by Symantec

• Website: bluecoat.com
• Ownership type: Corporate
• Headquarters: Sunnyvale, California, United States (USA)
• Employee distribution: United States (USA) 64%, India 12%, Malaysia 10%, Other 14%
• Latest funding: $4.7B, June 2016
• Founded year: 1996
• Headcount: 1001-5000
• LinkedIn: blue-coat-systems

Blue Coat Systems, acquired by Symantec and now part of Broadcom, is a cybersecurity and network management firm based in Sunnyvale, California. Founded in 1996, the company has built a reputation for offering a range of products and services that include web gateway appliances and security threat scanning. Blue Coat Systems primarily serves large enterprises and internet service providers, helping them secure their networks and manage internet traffic effectively. The company has played a significant role in the evolution of network security, adapting to the changing landscape of cyber threats and providing solutions that address the needs of its clients. With a workforce distributed across several countries, including a significant presence in the United States and India, Blue Coat continues to be a relevant player in the cybersecurity industry.

9. ExtraHop

• Website: extrahop.com
• Ownership type: Private Equity
• Headquarters: Seattle, Washington, United States (USA)
• Employee distribution: United States (USA) 84%, United Kingdom (UK) 5%, Singapore 4%, Other 8%
• Latest funding: $100.0M, January 2024
• Founded year: 2007
• Headcount: 501-1000
• LinkedIn: extrahop-networks

ExtraHop, founded in 2007 and based in Seattle, Washington, is a cybersecurity firm specializing in network detection and response (NDR) and network performance management. With a workforce of approximately 713 employees, the company serves enterprise organizations across various sectors, providing solutions that enhance their ability to detect and respond to cyber threats while maintaining operational resilience. ExtraHop's flagship product, the RevealX platform, integrates advanced threat hunting capabilities, ransomware detection, and cloud workload security, addressing the pressing needs of organizations in an increasingly complex digital environment. The company has recently secured $100 million in funding, reflecting strong investor interest and confidence in its growth trajectory. ExtraHop's commitment to enhancing network visibility and security hygiene positions it as a significant player in the cybersecurity landscape.

10. Vectra AI

• Website: vectra.ai
• Ownership type: Private Equity
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 50%, Ireland 18%, Germany 4%, Other 28%
• Latest funding: Series E-K, $130.0M, April 2021
• Founded year: 2011
• Headcount: 501-1000
• LinkedIn: vectra_ai

Vectra AI, Inc., founded in 2011 and based in San Jose, California, is a cybersecurity firm that specializes in AI-driven solutions for hybrid attack detection, investigation, and response. The company operates globally, serving a range of industries such as banking, healthcare, and government. Vectra AI's platform focuses on advanced security measures to protect against sophisticated cyber threats, utilizing real-time attack signal intelligence to enhance the capabilities of security operations centers (SOCs). With a workforce of approximately 647 employees, Vectra AI has made significant strides in the cybersecurity sector, particularly in the areas of network detection and response (NDR) and extended detection and response (XDR). The company has raised $130 million in its latest funding round, reflecting strong investor interest and support for its innovative approach to cybersecurity.

11. Netskope

• Website: netskope.com
• Ownership type: Private Equity
• Headquarters: Santa Clara, California, United States (USA)
• Employee distribution: United States (USA) 33%, India 32%, Taiwan 6%, Other 29%
• Latest funding: Convertible note, $401.0M, January 2023
• Founded year: 2012
• Headcount: 1001-5000
• LinkedIn: netskope

Netskope, headquartered in Santa Clara, California, is a cloud security provider that specializes in secure access and data protection solutions. Founded in 2012, the company has developed a robust portfolio of products designed to help businesses secure their cloud environments. Their offerings include Security Service Edge (SSE) and Cloud Access Security Broker (CASB) services, which are essential for managing security risks associated with cloud services and remote work. Netskope serves a wide range of industries, including finance and healthcare, and has built a customer base of over 3,400 organizations worldwide. Notably, more than 30 of the Fortune 100 companies rely on Netskope to enhance their security posture. The company has also received significant funding, with a recent investment of $401 million in January 2023, underscoring its growth trajectory and commitment to innovation in the cloud security domain.

12. Zingbox Inc. (A Palo Alto Networks Company)

• Website: zingbox.com
• Ownership type: Corporate
• Headquarters: Mountain View, California, United States (USA)
• Latest funding: $75.0M, September 2019
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: zingbox-inc.

Zingbox Inc., a subsidiary of Palo Alto Networks, was founded in 2014 and is based in Mountain View, California. The company specializes in cybersecurity solutions, particularly for Internet of Things (IoT) devices. Zingbox's technology focuses on providing visibility and security for connected devices, which are often vulnerable to cyber threats. Their approach incorporates Zero Trust principles, ensuring that every device is continuously monitored and assessed for risk. This is particularly important as organizations increasingly rely on IoT devices in their operations. Zingbox has received significant funding, amounting to $75 million as of September 2019, which underscores investor confidence in their solutions and market potential. As part of Palo Alto Networks, Zingbox leverages advanced technologies, including artificial intelligence, to enhance threat detection and response capabilities, positioning itself as a key player in the cybersecurity sector.

13. OpenDNS

• Website: umbrella.cisco.com
• Ownership type: Private
• Headquarters: San Francisco, California, United States (USA)
• Founded year: 2006
• Headcount: 501-1000
• LinkedIn: opendns

OpenDNS, now branded as Cisco Umbrella, is a cybersecurity firm based in San Francisco, California. Founded in 2006, the company has carved out a niche in providing cloud-delivered security solutions aimed at protecting organizations from cyber threats. Their services include DNS-layer security, secure web gateways, and cloud access security, catering to a wide array of sectors such as government, healthcare, and education. OpenDNS operates on a subscription model, allowing for scalable security solutions that adapt to the needs of various organizations. The company has established a strong presence in the cybersecurity market, with over 30,000 organizations relying on its services to secure their internet traffic and protect against malicious activities. Their integration with Cisco's security offerings enhances their capabilities and reach in the industry.

14. Nuspire

• Website: nuspire.com
• Ownership type: Private Equity
• Headquarters: Commerce Charter Township, Michigan, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: November 2016
• Founded year: 1999
• Headcount: 201-500
• LinkedIn: nuspire

Nuspire, founded in 1999 and based in Commerce Charter Township, Michigan, is a managed security services provider specializing in cybersecurity solutions. With a workforce of around 163 employees, Nuspire offers a comprehensive suite of services, including managed detection and response, endpoint protection, and cybersecurity consulting. Their client base spans various industries such as manufacturing, automotive, healthcare, and finance, showcasing their ability to tailor security measures to meet specific industry challenges. Nuspire emphasizes a people-first approach, leveraging over 25 years of experience to enhance clients' security postures. They also provide resources like threat modeling and incident response, which are critical in today's evolving threat landscape. Nuspire has not reported any recent funding, indicating a stable operational model without reliance on external capital.

15. Cysiv MEA

• Website: cysiv.com
• Ownership type: Corporate
• Headquarters: Cairo, Illinois, United States (USA)
• Latest funding: June 2022
• Founded year: 2008
• Headcount: 51-200
• LinkedIn: securemisr

Cysiv MEA, based in Cairo, Illinois, is a cybersecurity firm established in 2008. The company specializes in automated solutions that focus on risk and exposure management, network security, and threat detection. Cysiv MEA serves a variety of sectors, helping organizations navigate the complexities of cyber risks and compliance requirements. Their platform is designed to support both managed and unmanaged assets, which is crucial in today's environment where the attack surface is constantly expanding. While the company has not reported any recent funding, it continues to operate actively in the cybersecurity space, providing essential services to its clients.

16. Netgate

• Website: netgate.com
• Ownership type: Private
• Headquarters: Austin, Texas, United States (USA)
• Employee distribution: United States (USA) 84%, Pakistan 4%, Mexico 4%, Other 8%
• Founded year: 2002
• Headcount: 51-200
• LinkedIn: netgate

Netgate, founded in 2002 and based in Austin, Texas, is a private company that specializes in secure networking software and hardware. With a workforce of approximately 127 employees, Netgate has carved out a niche in the networking solutions market, particularly through its flagship products, pfSense Plus and TNSR software. These offerings are designed to provide robust firewall, routing, and VPN capabilities, catering to both individual users and organizations. Netgate's commitment to open-source software is evident in its contributions to various projects, enhancing the security and performance of its products. The company also provides professional services, including consulting and training, to ensure that clients can effectively implement and manage their networking solutions. Their clientele includes a range of industries, from construction to defense, showcasing their adaptability and relevance in the network security sector.

17. Cipher | A Prosegur company

• Website: cipher.com
• Ownership type: Venture Capital
• Headquarters: Miami, Florida, United States (USA)
• Employee distribution: Brazil 40%, Spain 38%, United States (USA) 11%, Other 11%
• Latest funding: January 2015
• Founded year: 2000
• Headcount: 201-500
• LinkedIn: cipher

Cipher | A Prosegur company, based in Miami, Florida, specializes in cybersecurity solutions aimed at enhancing the security posture of businesses and organizations. Founded in 2000, the company has grown to employ around 374 professionals, with a significant presence in Brazil, Spain, and the United States. Cipher offers a range of services, including managed security services (MSS), consulting, and their innovative xMDR platform, which utilizes AI-driven analytics to improve threat detection and response. The company operates six Cybersecurity Operation Centers, allowing them to provide 24/7 monitoring and support. Cipher's approach is characterized by a commitment to continuous improvement, helping clients navigate the complexities of cybersecurity in an ever-evolving threat landscape. Their solutions are designed to integrate seamlessly with existing technologies, ensuring comprehensive protection without the need for extensive changes to clients' current systems.

18. TechGuard Security

• Website: techguard.com
• Ownership type: Private
• Headquarters: O'Fallon, Illinois, United States (USA)
• Employee distribution: United States (USA) 86%, Australia 8%, India 3%, Other 3%
• Founded year: 2000
• Headcount: 51-200
• LinkedIn: techguard-security

TechGuard Security, founded in 2000 and based in O'Fallon, Illinois, is a cybersecurity firm that specializes in providing a wide array of cybersecurity solutions. The company focuses on risk management, security awareness training, and compliance consulting, catering to both government entities and private sector businesses. With a workforce of approximately 93 employees, TechGuard has built a reputation for its innovative approaches to cybersecurity challenges. They have developed a comprehensive suite of services, including their DEFEND360™ solution, which integrates proactive threat prevention with robust defense measures. TechGuard has also been involved in significant projects with various U.S. government agencies, including the Department of Defense and the Department of Homeland Security, reflecting their expertise in securing critical infrastructure. Their commitment to education is evident through their extensive training programs aimed at enhancing organizational cybersecurity awareness. TechGuard has filed numerous patents related to cybersecurity technologies, underscoring their focus on innovation in the field.

19. iboss

• Website: iboss.com
• Ownership type: Private Equity
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 71%, Philippines 12%, United Kingdom (UK) 12%, Other 6%
• Latest funding: Series B, $145.0M, January 2021
• Founded year: 2003
• Headcount: 201-500
• LinkedIn: iboss

Iboss, founded in 2003 and based in Boston, Massachusetts, is a cybersecurity firm that specializes in secure access solutions through its Zero Trust Secure Access Service Edge platform. The company offers a range of services, including Zero Trust Network Access (ZTNA) and Secure Web Gateway (SWG), aimed at helping organizations protect their data and applications, particularly in the context of increasing remote work. With a workforce of approximately 341 employees, iboss serves various sectors, including finance, healthcare, and education, all of which demand robust security protocols. The company has attracted significant investment, with a reported funding amount of $145 million in a Series B round in January 2021. This financial backing supports its ongoing development and innovation in cybersecurity solutions. Iboss has also been recognized for its contributions to the industry, being named a leader in the IDC MarketScape for its Zero Trust Network Access solutions, highlighting its commitment to addressing modern security challenges.

20. Twistlock

• Website: twistlock.com
• Ownership type: Private
• Headquarters: Portland, Oregon, United States (USA)
• Employee distribution: United States (USA) 50%, Israel 50%
• Founded year: 2015
• Headcount: 51-200
• LinkedIn: twistlock

Twistlock, founded in 2015 and based in Portland, Oregon, specializes in cloud-native security solutions. The company focuses on securing applications throughout their lifecycle, from development to deployment. Twistlock's technology is particularly geared towards container security, addressing the unique challenges posed by modern application architectures. Their solutions are designed to protect against vulnerabilities and threats in cloud environments, making them a critical player in the cybersecurity landscape. In 2019, Twistlock was acquired by Palo Alto Networks, further enhancing its capabilities and reach in the cybersecurity market. The company has not reported any recent funding, indicating a stable operational status under the Palo Alto Networks umbrella.

21. Liquid Networx

• Website: liquidnetworx.com
• Ownership type: Private
• Headquarters: San Antonio, Texas, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1997
• Headcount: 51-200
• LinkedIn: liquid-networx

Liquid Networx, based in San Antonio, Texas, is a private IT service provider that has been active since 1997. The company specializes in cybersecurity and network solutions, catering to businesses across various industries. Their service offerings include network security, cloud security, and security operations, with a strong emphasis on improving client outcomes through customized IT infrastructure solutions. Liquid Networx has established itself as a strategic partner to Fortinet, a major cybersecurity organization, which enhances its reputation in the field. The firm is recognized for its expertise in implementing secure, high-availability IT infrastructures, and it has evolved from its origins in telecommunications to become a notable player in the cybersecurity domain. With a dedicated team of professionals, Liquid Networx aims to provide effective security measures and support to its clients, ensuring they can navigate the complexities of modern cybersecurity threats.

22. McAfee

• Website: mcafee.com
• Ownership type: Private Equity
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: India 50%, United States (USA) 23%, Canada 7%, Other 20%
• Latest funding: March 2022
• Founded year: 1987
• Headcount: 1001-5000
• LinkedIn: mcafee

McAfee Corp. is a computer security software company headquartered in San Jose, California. Founded in 1987, McAfee has built a reputation for providing comprehensive security solutions aimed at protecting individuals and families from various cyber threats. The company offers a wide array of products, including antivirus software, identity protection services, and privacy tools. McAfee's services are primarily targeted at consumers, helping them safeguard their personal information and devices through a subscription-based model. The company has a significant global presence, with a large portion of its workforce based in India, and it continues to innovate in response to the evolving landscape of cyber threats. McAfee also emphasizes customer support and education, providing resources to help users understand and mitigate risks associated with online activities.

Network Security Insights: Key Companies in the US

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