The burgeoning field of network security, particularly within Colorado, hosts a plethora of esteemed companies focused on protecting both individuals and organizations against cyber threats. These companies offer a diverse range of services, which can include risk assessment, malware treatment, cloud security, IoT security and more. In this rapidly evolving digital era, their goal is to stay ahead of emerging technological risks. Striving to maintain the confidentiality, integrity, and availability of their clients' data, these companies play a pivotal role in safeguarding businesses' critical systems from cyber threats.


Top 25 network security companies in Colorado

1. Coalfire

  • Website: coalfire.com
  • Headquarters: Westminster, Colorado, United States
  • Founded: 2001
  • Headcount: 1001-5000
  • Latest funding type: Acquired
  • LinkedIn

Coalfire is a leading global cybersecurity firm that helps organizations strengthen their security posture and protect their businesses from cyber threats. With expertise in cloud security, compliance services, vulnerability management, and more, Coalfire provides expert guidance and advisory services to meet the unique cybersecurity needs of its clients.


2. DirectDefense

DirectDefense is a cybersecurity company that specializes in enterprise risk assessment, talent acquisition strategy, architecture review, and IoT/IIoT security. They offer purposeful security roadmaps to eliminate risks and build cyber resilience.


3. Complete Tech Support

  • Website: completetech.support
  • Headquarters: Colorado Springs, Colorado, United States
  • Headcount: 1001-5000

Complete Tech Support is a cyber security and tech support service provider specialized in offering remote support, network vulnerability assessment, and malware treatment. Their services include protection against browser vulnerability and hacking exploits, prevention of shoulder surfing, and counter implementation of software to monitor and detect suspicious activities. They also provide detailed tech reports for every user level and do not use jargon. CTS values the work that it undertakes, guaranteeing optimum levels of system operation for their clients.


4. VirtualArmour

  • Website: virtualarmour.com
  • Headquarters: Englewood, Colorado, United States
  • Founded: 2001
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

VirtualArmour is a cybersecurity company that offers hardware and software solutions, as well as managed security services. They have been serving businesses, enterprises, and organizations globally since 2001.


5. Peak Security, Inc.

  • Website: peaksec.com
  • Headquarters: Monument, Colorado, United States
  • Founded: 2008
  • Headcount: 11-50
  • LinkedIn

Peak Security is a cybersecurity company that provides services such as penetration testing, security assessment, and security consulting. They also offer compliance auditing and crisis management training. With a focus on helping businesses protect their digital assets, Peak Security is dedicated to maintaining the highest level of security for their clients.


6. Cypress Data Defense

Cypress Data Defense is a cybersecurity company that helps organizations secure their IT development and operations. They offer a range of security controls to governance, networks, and applications to prevent cyberattacks and protect sensitive data.


7. Rigid Bits

  • Website: rigidbits.com
  • Headquarters: Longmont, Colorado, United States
  • Founded: 2016
  • Headcount: 11-50
  • Latest funding type: Acquired
  • LinkedIn

Rigid Bits is a cybersecurity firm that provides services, technology, and consulting to identity and reduce cybersecurity risks for businesses. They work with leadership and IT teams to test and reinforce existing controls, plan ahead, and meet regulatory compliance requirements.


8. Virtualarmor, LLC

VirtualArmor is a cyber security company that offers managed security services for businesses.


9. Tekkis

  • Website: tekkis.com
  • Headquarters: Westminster, Colorado, United States
  • Founded: 2006
  • Headcount: 1-10
  • LinkedIn

Tekkis offers network engineering and cybersecurity solutions including virtual CISO, ethical hacking, red and blue team operations, and penetration testing. Their engineers have the skills to plan, implement, and oversee network projects while their security practitioners help organizations develop cybersecurity roadmaps.


10. MainNerve LLC

  • Website: mainnerve.com
  • Headquarters: Colorado Springs, Colorado, United States
  • Founded: 2001
  • Headcount: 11-50
  • LinkedIn

Main Nerve offers a range of services and solutions to empower businesses with cutting-edge technologies and digital strategies. With a focus on innovation and efficiency, they provide comprehensive solutions to help companies thrive in the digital era.


11. StackHawk

  • Website: stackhawk.com
  • Headquarters: Denver, Colorado, United States
  • Founded: 2019
  • Headcount: 11-50
  • Latest funding type: Series B
  • LinkedIn

Stackhawk is a modern dynamic application security testing tool that helps developers and engineering teams identify and fix vulnerabilities in their pipeline. It offers automated security testing in CI/CD, enabling faster detection and mitigation of security issues before they hit production.


12. Lark Security

Lark Security is a cybersecurity company that specializes in helping organizations build and manage resilient cybersecurity and compliance programs.


13. Murray Security Services

Murray Security Services is a cybersecurity consulting and training company providing professional expertise to solve small to complex problems for their clients. They offer cybersecurity training and certification courses including CompTIA Security + (Sec+) and Certified Chief Information Security Officer (C|CISO).


14. Rent-A-Hacker

  • Website: rent-a-hacker.com
  • Headquarters: Boulder, Colorado, United States
  • Headcount: 1-10

Rent-A-Hacker was formed in 1997 to afford everyone the means to protect their valuable information assets. Most cybersecurity firms' goal is to sell you security products, but our focus is on auditing, detection and proactive prevention. We are ""vendor-neutral"" in that we are not beholden to any product manufacturer or distributor, allowing us the flexibility to recommend the product we feel best serves your needs. Rent-A-Hacker, Inc. is a small privately held corporation with headquarters in Boulder, Colorado, USA.


15. Intrinsic Cyber Solution & Services LLC

Intrinsic Cyber Solutions and Services LLC emerged out of a growing need for IT and Cybersecurity training and services. Based in Monument, Colorado, Intrinsic Cyber provides a variety of cyber and training services throughout the Colorado Springs area. Our staff is deeply engrained in both the IT/Cyber and Academic industries and bring years of experience in cybersecurity solutions and training. Our training programs and courses focus on application of concepts and training objectives with current events, operational environments, and real-world scenarios. Our clients span across commercial, academic, and government/military sectors seeking organizational specific training and industry accepted certification training. Contact us for our in-person and virtual training services and IT/Cyber solutions!


16. Exfil Security

  • Website: exfilsecurity.com
  • Headquarters: Denver, Colorado, United States
  • Headcount: 1-10

The team at Exfil Security is made up of seasoned professionals, all of whom have over a decade of experience in information security. Whether it's sales, operations, or engineering, our team has worked with a wide variety of clients across every industry and around the world. We've worked with government agencies, Fortune 500 companies, large financial institutions, law firms, and with small businesses with fewer than 10 employees. We bring this wide array of viewpoints and experiences to every assessment we perform and work with our clients to roadmap the most efficient solutions possible given their environmental and regulatory needs.


17. ClearNet Security

ClearNet Security is a US-based security team specializing in advanced security assessments. Their areas of expertise include physical and social engineering, investigations, and penetration testing.


18. InteliSecure, a division of Proofpoint

InteliSecure, now part of Proofpoint, specializes in building solutions that simplify data protection for businesses of nearly every size. More than 500 clients with over 2 million managed users rely on our specialists and suite of data security services to protect the integrity and safety of their sensitive information. With more than 18 years’ experience and partnerships with some of the world’s biggest names in cyber defense, we reduce data security and compliance complexity. Our proven managed data protection services provide effective data protection at a lower cost, eliminating the strain on IT organizations and reducing the risk of information exposure and loss. Unlike other cybersecurity providers, we focus on business outcomes—providing data and reports that make sense to business and security executives alike. InteliSecure serves clients globally with security operations centers in the United States, Saipan, and the United Kingdom.


19. Accedere Inc

  • Website: accedere.io
  • Headquarters: Denver, Colorado, United States
  • Founded: 2017
  • Headcount: 11-50
  • LinkedIn

Accedere is an audit and assurance firm that provides cybersecurity, privacy compliance, and auditing services to companies. They offer ISO/IEC Certification, vulnerability assessments, pen testing, and auditing for cloud security and supply chain assessments.


20. Greatheart | Information Security Solutions

Greatheart is an information security company that offers a suite of security solutions to protect the world's information. Their offerings include penetration testing, security engineering, training and awareness, and holistic security assessment.


21. Rearden Logic, Inc.

Rearden Logic Inc. is an information technology and cyber security company that provides services to government and business clients. Their services range from architecture and design to implementation and operations, including networks, artificial intelligence, and radio frequency.


22. C'S|3 Consultancy

  • Website: cees3.com
  • Headquarters: Colorado Springs, Colorado, United States
  • Headcount: 11-50
  • LinkedIn

C'S|3 Consultancy Corp is a consultancy firm offering a variety of services such as organizational assessments, consultancy services, financial services, software development, leadership development & coaching, and managed IT & security services.


23. Sentient Cyber Security

Sentient Cyber Security is a Service Disabled Veteran Owned cyber security firm specializing in managed security, vulnerability assessments, penetration testing, policy development, and regulatory compliance with a decade of Offensive Military Cyber Warfare experience


24. MakeSecure, LLC

  • Website: makesecure.net
  • Headquarters: Highlands Ranch, Colorado, United States
  • Founded: 2006
  • Headcount: 1-10
  • LinkedIn

MakeSecure, LLC is a team of cyber security experts providing IT and security related solutions. They offer expertise in Cisco products, F5 Security, and Meraki solutions along with comprehensive vulnerability assessments, penetration testing and security reviews. They help clients pick the right security solutions for their business, technical or regulatory needs, integrate and manage them in both on-prem and cloud type infrastructures.


25. PCG Systems

PCG Systems is a Denver-based IT consulting and managed services provider. With a focus on strategy, technology, and business transformation, PCG Systems helps clients achieve remarkable goals and solve complex problems.


Want to find more network security companies?


If you want to find more companies that offer services ranging from risk assessment to malware treatments you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


With Inven you'll also get to know the company's:


  • Ownership: Which of these are private equity backed? Which are family-owned?
  • Contact data: Who are the owners and CEO's? What are their emails and phone numbers?
  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!