The network security sector in Illinois houses a vast range of enterprises that provide a multitude of services. These firms often offer services such as security assessments, prevention, vulnerability management, PCI compliance, and penetration testing, helping other businesses to protect their sensitive data and ensure regulatory compliance. Notable within the industry are Sentinel Technologies and SecureTrust, companies that have crafted customized, integrated IT solutions focused on application security, identity access and more. Looking forward, the sector appears poised for further growth with an increasing demand for cybersecurity measures.


Top 23 network security companies in Illinois

1. Sentinel Technologies

  • Website: sentinel.com
  • Headquarters: Downers Grove, Illinois, United States
  • Founded: 1982
  • Headcount: 501-1000
  • Latest funding type: Series Unknown
  • LinkedIn

Sentinel is an independent technology company offering integrated, customized IT solutions. They provide security assessments, prevention, and operations services, as well as application security, identity access, and network security. Additionally, they offer cloud migration, collaboration, and managed infrastructure services. Sentinel specializes in serving various industries and has a strong focus on security and customer support.


2. SecureTrust

  • Website: securetrust.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2001
  • Headcount: 201-500
  • Latest funding type: Acquired
  • LinkedIn

SecureTrust is a leading provider of security and compliance solutions. They specialize in helping businesses protect their sensitive data and ensure regulatory compliance. With a comprehensive suite of services, including vulnerability management, PCI compliance, and penetration testing, SecureTrust helps companies mitigate risk and maintain a secure environment.


3. TechGuard Security

  • Website: techguard.com
  • Headquarters: O'Fallon, Illinois, United States
  • Founded: 2000
  • Headcount: 51-200
  • LinkedIn

TechGuard Security is a leading innovator of cybersecurity technology and services, offering comprehensive solutions to reduce the risk of cybersecurity incidents. Trusted by the Federal Government, TechGuard provides vulnerability assessments, penetration testing, security awareness training, and risk assessments. With over 20 years of experience, they are committed to protecting sensitive information and ensuring data privacy.


4. Verve Industrial Protection

Verve Industrial is a cybersecurity company specialized in providing OT/ICS endpoint security solutions for Fortune 500 Power Generation, Pharmaceuticals & Medical Device, Manufacturing, and Water industries. Their platform, Verve Security Center, offers services like asset inventory, vulnerability management, patch management, configuration management, incident response, and backup & restore. They aim to integrate protection and defense software with network controls to ensure long-term security in OT/ICS environments.


5. RedLegg

  • Website: redlegg.com
  • Headquarters: St. Charles, Illinois, United States
  • Founded: 2008
  • Headcount: 51-200
  • LinkedIn

RedLegg is a provider of managed detection and response (MDR) security services. They offer personalized information security programs that help identify and mitigate weaknesses in their clients' security posture. Their services include threat intelligence, incident response, penetration testing, and vulnerability scanning. RedLegg works with various industries, including legal and insurance, and offers a tailored approach to managed security that prioritizes trust and effective communication. With a focus on hands-on, results-driven security, they aim to be a trusted partner in navigating complex terrain.


6. NowSecure

  • Website: nowsecure.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2009
  • Headcount: 51-200
  • Latest funding type: Debt Financing
  • LinkedIn

NowSecure provides solutions and tools for companies embracing a mobile-first strategy. They offer mobile app security testing, penetration testing, app vetting for supply chain, and compliance solutions. With a focus on speed, compliance, and risk reduction, NowSecure serves various industries including consumer, retail, hospitality, financial services, government, high tech, telecommunications, and healthcare.


7. onShore Security

  • Website: onshore.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1991
  • Headcount: 51-200
  • LinkedIn

onshore.com is a cybersecurity company that supplies, monitors, and supports a wide variety of technology solutions. They offer managed security services, including managed detection and response, vulnerability management, and security assessments. Their expertise lies in protecting customer data and helping organizations achieve compliance with government and industry regulations. With a strong focus on cybersecurity leadership, onshore.com empowers IT teams and provides constant network vigilance to ensure network security.


8. CampusGuard

CampusGuard is a cybersecurity and compliance company that offers a unified approach to organizations on campuses. They provide services such as IT security assessments, vulnerability scanning, web app scanning, and penetration testing. CampusGuard helps ensure the protection of sensitive data and compliance with regulations.


9. Hellfire Security

Hellfire Security is a cybersecurity company offering penetration testing, managed firewall, and managed intrusion detection/prevention services to help clients identify and address vulnerabilities in their systems, applications, and networks.


10. Rivalime

Rivalime is an IT solution company that provides data center security solutions, including identity and access management, intrusion detection and prevention systems, and privileged access management. They offer design, implementation, and maintenance services as per industry standards.


11. Groman Cyber

  • Website: gromancg.com
  • Headquarters: Skokie, Illinois, United States
  • Founded: 2018
  • Headcount: 1-10
  • LinkedIn

Groman Consulting Group was born from the realization that within the Cyber Security space there is a lot of noise and not enough voices of reason. We bring a lot of experience and knowledge to the table and we partner with our clients and help them do more with their security teams by focusing on automation and education. We realize that the information we can impart is only half of the equation. Business risk can only be determined and acted upon when we work together to determine the right path forward.


12. Konsultek

Konsultek is a security intelligence provider that offers services to connect, protect, inform, and manage client information. They specialize in security analysis, risk assessment, vulnerability assessments, and penetration testing.


13. Ascend Technologies

Team Ascend is a cybersecurity consulting company that specializes in helping businesses protect their data and systems from cyberattacks. They offer a range of services including cybersecurity assessments, vulnerability scanning, incident response, and endpoint security. With their expertise and comprehensive solutions, Team Ascend empowers businesses to safeguard their valuable assets and maintain a strong security posture.


14. Fortis By Sentinel

Sentinel Technologies proudly presents Fortis: a comprehensive portfolio of security services and solutions designed to proactively protect every aspect of your digital and physical environment. Our goal is to ensure your organization has the most effective tools to defend its systems, data, and users against an ever-evolving threat landscape.


15. MSMNET Security

MSMNET Security is a boutique cybersecurity firm that delivers expert-level talent and exceptional value to help safeguard against cybersecurity threats and regulatory non-compliance.


16. InPath Security

InPath Security provides continuous business IT testing, vulnerability scanning, employee training, and security engagement to help organizations prevent cyber attacks and data breaches.


17. Redbud Cybersecurity Recruiting

Redbud Cybersecurity Recruiting is a top recruitment agency specializing in cybersecurity talent. They empower their clients by helping them hire top-performing cybersecurity talent.


18. National Catholic Risk Retention Group INC

The National Catholic Risk Retention Group specializes in cyber risk management services, such as audit, advisory, and recovery. Their clients include Fortune 500 firms, government agencies, healthcare organizations, and financial service providers. They also offer compliance audits, penetration testing, and intrusion detection. TNCRRG is devoted to satisfying the needs of Roman Catholic organizations and recognizes their fiduciary duties as stewards of the patrimony of the Church.


19. Simplelogix

  • Website: simplelogix.com
  • Headquarters: Oakbrook Terrace, Illinois, United States
  • Founded: 2007
  • Headcount: 51-200
  • LinkedIn

Simplelogix is a strategy consulting firm offering managed cloud services, business intelligence solutions, and IT support. They provide services such as consulting, system integrations, mobile app and web development, software solutions, and more. Their team of professionals ensures top-notch service and adherence to coding standards.


20. Zakti Security Labs

Zakti Security Labs is a cybersecurity consulting firm that specializes in risk assessment, IT audit, security testing, and fraud analysis. They offer services to companies in healthcare, finance, and other industries.


21. Secbay

  • Website: secbay.com
  • Headquarters: Oak Brook, Illinois, United States
  • Headcount: 1-10

Secbay offers alliance partnerships at different levels for IT consulting, system integrator and resellers, and training and technical content organizations. Join our Secbay referral, reseller, or marketing alliance partner and establish a consistent revenue stream, differentiate from your competition, and generate incremental revenue opportunities with your new and existing clients. Partnering with Secbay will provide you with access to an extensive set of marketing tools, existing client base and technical training opportunities. For specific details about partnership program, please Contact one of our specialists today.


22. Connecting Point Computer Center - We Provide Solutions

  • Website: cpointcc.com
  • Headquarters: Peru, Illinois, United States
  • Founded: 1966
  • Headcount: 11-50
  • LinkedIn

CPCC is a company that offers a range of services including emergency IT support, vulnerability assessment, penetration testing, website design and development, social media management, and digital marketing services.


23. Super V Technology

We help our clients improve by utilizing our ability and experience, the extensive arrangement of a portfolio, and an adaptable commitment plan of action. We work with a wide scope of business from new businesses to enormous scale business who wants to build new products you can always count on us to turn your dreams into reality. Our team of exceptionally experienced software engineers and designers are self-asserting associated with an assortment of undertakings going from mobile application development, web application development, responsive web composition, and open source customization. We Provide Key Services for - Office 365 - SharePoint Development - Power BI - Canvas App - Power Apps - Cyber Security Services - Cyber Security professional services - Cyber Security Staff Augmentation - E-Commerce Development - Mobile App Development - Web Development - Business Intelligence - UI / UX Design


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