The network security industry in Illinois focuses on safeguarding digital assets, making it crucial as cyber threats escalate. This sector features a mix of firms specialized in areas such as managed security services, threat detection, and compliance solutions. Companies range from startups to larger corporate entities, catering to various industries like finance and healthcare. With cyberattacks on the rise, the industry is evolving rapidly, integrating cutting-edge technologies like AI to enhance defense mechanisms. Moreover, the emphasis on zero-trust architecture reflects a forward-thinking strategy to tackle emerging risks in an increasingly interconnected world.

The companies listed here range in size from quaint teams of under 50 to firms employing hundreds. Headquartered primarily in urban areas like Chicago, these businesses have origins spanning from 1989 to recent years. Their expertise varies from cybersecurity consulting to managed services, designed to protect organizations against evolving online threats. Major players such as Trustwave and TechGuard highlight the competitive nature of this market, showcasing innovation within the cybersecurity realm.

Continue reading to explore Illinois' top network security companies.

Top 23 Network Security Companies in Illinois

1. 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 a broad spectrum of security services. With a workforce of approximately 1,000 employees, Trustwave operates globally, providing solutions tailored to the needs of businesses across various sectors, including financial services, healthcare, and retail. Their offerings include managed detection and response, database security, incident response, and penetration testing, among others. Trustwave's SpiderLabs team, composed of ethical hackers and security researchers, plays a crucial role in threat detection and response, enhancing their service capabilities. The company has also been recognized for its contributions to the cybersecurity field, receiving accolades from industry analysts and participating in significant cybersecurity discussions and reports.

2. 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, founded in 2008 and based in Cairo, Illinois, is a cybersecurity firm that specializes in automated solutions for risk and exposure management, network security, and threat detection. The company serves a variety of sectors, helping organizations manage their cyber risks and ensure compliance with industry standards. Cysiv MEA operates on a scalable platform that supports both managed and unmanaged assets, which is crucial in today's complex digital environment. Their focus on continuous monitoring and proactive risk management positions them as a relevant player in the cybersecurity field, particularly in network security. Despite not having reported any recent funding, their established presence since 2008 and ongoing commitment to innovation in cybersecurity solutions highlight their importance in the industry.

3. 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 dedicated to providing comprehensive solutions to protect critical infrastructure and sensitive data. With a workforce of approximately 93 employees, the company has carved out a niche in the cybersecurity landscape by offering services such as risk management, compliance consulting, and security awareness training. TechGuard has a notable history of serving government agencies, including the Department of Defense and the Department of Homeland Security, as well as various corporate clients. Their innovative approach is exemplified by their DEFEND360™ service, which integrates proactive threat prevention with robust defense measures. TechGuard has also been recognized for its thought leadership in the industry, contributing to advancements in cybersecurity practices and technologies. The company has filed for over fifty patents related to cybersecurity, underscoring its commitment to innovation and excellence in the field.

4. Innovative Technology Solutions

• Website: innovativetech.com
• Ownership type: Private
• Headquarters: Schaumburg, Illinois, United States (USA)
• Founded year: 1998
• Headcount: 501-1000
• LinkedIn: innovative-technology-solutions

Innovative Technology Solutions, known as DYOPATH, is an IT services provider based in Schaumburg, Illinois, founded in 1998. The company specializes in cybersecurity, cloud solutions, and managed services, catering to a variety of sectors including education, healthcare, and finance. DYOPATH focuses on helping organizations mitigate risks and enhance operational efficiency through tailored IT solutions. Their service portfolio includes advanced security services, cyber assessments, and managed security, which are critical in today’s landscape of escalating cyber threats. The company emphasizes a proactive approach to security, ensuring that clients are not only compliant but also well-protected against potential breaches. With a workforce of around 132 employees, DYOPATH is positioned to deliver personalized service and expertise to its clients, making it a notable player in the cybersecurity field.

5. DOT Security

• Website: dotsecurity.com
• Ownership type: Private
• Headquarters: Lake Forest, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2021
• Headcount: 11-50
• LinkedIn: dot-security

DOT Security, based in Lake Forest, Illinois, is a cybersecurity firm that specializes in providing a wide range of services aimed at protecting businesses from cyber threats. Founded in 2021, the company emerged from the need for enhanced cybersecurity solutions, particularly as remote work became more prevalent during the COVID-19 pandemic. DOT Security offers services such as risk assessments, compliance assistance, endpoint protection, and cybersecurity consulting. Their approach is characterized by a thorough understanding of client needs, ensuring that each solution is customized. The company operates a Security Operations Center that provides 24/7 monitoring and support, reinforcing their commitment to safeguarding sensitive data and networks. With a team of trained experts, DOT Security aims to deliver proactive and effective cybersecurity strategies to businesses across various industries.

6. Resource Communications, Inc.

• Website: resourcecomm.com
• Ownership type: Private
• Headquarters: Lisle, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1989
• Headcount: 11-50
• LinkedIn: resourcecomm-inc

Resource Communications, Inc. (RCI), based in Lisle, Illinois, has been a player in the IT consulting industry since its inception in 1989. The company specializes in network performance management and cybersecurity solutions, catering to large organizations across various sectors, including healthcare, finance, and manufacturing. RCI's mission is to deliver solutions that ensure business networks operate efficiently and securely. Their services include network test and measurement, performance management, and comprehensive cybersecurity solutions. RCI emphasizes a personalized approach, working closely with clients to address their specific technical and budgetary needs. The firm has established partnerships with notable technology providers, enhancing its ability to deliver innovative solutions. RCI's commitment to client success and its extensive experience in the field position it as a relevant entity in the network security industry.

7. onShore Security a CyberMaxx Company

• Website: onshore.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1991
• Headcount: 51-200
• LinkedIn: onshoresecurity

onShore Security, a CyberMaxx Company, is a cybersecurity firm based in Chicago, Illinois, founded in 1991. The company specializes in managed security services, offering solutions such as Managed Detection and Response (MDR) and Security Orchestration. onShore Security aims to help businesses protect their networks and comply with various regulations. Their clientele includes organizations in critical sectors like banking and construction, which rely on their expertise to mitigate cybersecurity risks and ensure data protection. The firm operates with a dedicated team that provides 24/7 monitoring and support, enhancing the security posture of its clients. onShore Security has also been recognized in the industry, being named to MSSP Alert’s 2023 List of Top 250 MSSPs, underscoring its commitment to excellence in cybersecurity services.

8. Entara

• Website: entaracorp.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2001
• Headcount: 51-200
• LinkedIn: entaracorp

Entara, founded in 2001 and based in Chicago, Illinois, is a private IT service provider that specializes in cybersecurity solutions. With a workforce of approximately 95 employees, the company has carved out a niche in managed IT services, incident response, and strategic risk management. Their offerings include managed endpoint detection and response, vulnerability management, and business continuity planning. Entara has built a reputation for helping organizations recover from cybersecurity incidents, particularly ransomware attacks, by leveraging their extensive experience in the field. Their clientele spans various industries, notably financial services and insurance, which underscores their expertise in navigating complex IT environments. The company emphasizes a security-first approach, integrating cybersecurity measures into all aspects of their services to enhance resilience against evolving cyber threats.

9. Six Degrees Consulting

• Website: sixdegreesconsulting.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2001
• Headcount: 11-50
• LinkedIn: six-degrees-consulting

Six Degrees Consulting, based in Chicago, Illinois, is an IT consulting firm established in 2001. With a team of 20 employees, the company specializes in cybersecurity solutions tailored for businesses facing intricate IT challenges. Their service offerings include email and cloud collaboration security, network security, cloud security, and endpoint protection. Six Degrees Consulting collaborates with prominent technology partners such as Check Point and Oracle to provide robust security solutions. The firm has been recognized for its expertise, notably being named a top email security solutions provider by Enterprise Security magazine. Their approach combines technical knowledge with a strong emphasis on customer relationships, ensuring that clients receive tailored solutions that meet their specific needs. Six Degrees Consulting has built a reputation for addressing complex security issues, making them a notable player in the cybersecurity field.

10. ES Cyber Solutions

• Website: escybersolutions.com
• Ownership type: Private
• Headquarters: Willowbrook, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: espo-systems

ES Cyber Solutions, founded in 2009 and based in Willowbrook, Illinois, is a private cybersecurity service provider. The company employs between 51 to 200 individuals and focuses on managed security services, professional services, training, and staffing solutions. They cater to a wide range of businesses and organizations, helping them safeguard their IT infrastructure against cyber threats. ES Cyber Solutions is particularly noted for addressing the cybersecurity skills gap, offering expert knowledge to ensure effective use of security technologies. Their service offerings include cloud security, data loss prevention, email security, endpoint security, and network security, among others. The company collaborates with prominent cybersecurity vendors, enhancing their service delivery and ensuring they remain relevant in a rapidly evolving industry.

11. UncommonX

• Website: uncommonx.com
• Ownership type: Venture Capital
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Series A, $9.5M, December 2021
• Founded year: 2012
• Headcount: 201-500
• LinkedIn: uncommonxinc

UncommonX, founded in 2012 and based in Chicago, Illinois, is a cybersecurity company that specializes in Exposure Management. The firm provides a platform designed to offer visibility and protection against cyber threats, which is crucial for organizations in today's digital landscape. Their services include Managed Detection and Response (MDR), Vulnerability Management, and 24/7 Managed Security Operations Center (SOC) support. UncommonX caters to various industries, including education, healthcare, and finance, demonstrating their adaptability to different security needs. The company has received significant funding, with a Series A round totaling $9.5 million in December 2021, indicating investor confidence in their business model and technology. With 26 patents to their name, UncommonX is positioned as an innovative player in the cybersecurity field, focusing on real-time risk assessment and threat management.

12. Keeper Security, Inc.

• Website: keepersecurity.com
• Ownership type: Private Equity
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 76%, Ireland 21%, Japan 3%
• Latest funding: May 2023
• Founded year: 2011
• Headcount: 201-500
• LinkedIn: keeper-security-inc-

Keeper Security, Inc., founded in 2011 and based in Chicago, Illinois, is a cybersecurity firm that specializes in software solutions for password management, privileged access management, and secure remote access. The company serves a wide range of clients, including individuals, businesses, and managed service providers, helping them safeguard sensitive information and effectively manage access to critical data. Keeper Security's product offerings include a password manager, privileged access manager, secrets manager, and remote browser isolation tools. Their focus on zero-trust security principles and compliance reporting reflects their commitment to addressing modern cybersecurity challenges. The company has also made strides in educating users about cybersecurity threats and best practices, further solidifying its role in the industry.

13. VikingCloud

• Website: vikingcloud.com
• Ownership type: Corporate
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 39%, India 20%, Poland 18%, Other 23%
• Latest funding: December 2020
• Founded year: 2019
• Headcount: 1001-5000
• LinkedIn: vikingcloud

VikingCloud, founded in 2019 and based in Chicago, Illinois, is a cybersecurity and compliance firm that specializes in protecting sensitive data for businesses, particularly in the finance and healthcare sectors. With a workforce of around 648 employees, the company has established itself as a provider of managed security services, threat detection, and PCI compliance solutions. Their offerings include vulnerability scanning, penetration testing, and endpoint security, all aimed at reducing cybersecurity risks and ensuring regulatory compliance. VikingCloud's Asgard Platform serves as a central hub for their cybersecurity and compliance services, allowing businesses to monitor and manage their security posture effectively. The company has not reported any funding since its inception, indicating a self-sustaining operational model as it continues to grow its client base and service offerings.

14. Villa-Tech, Inc.

• Website: villa-tech.com
• Ownership type: Private
• Headquarters: Naperville, Illinois, United States (USA)
• Employee distribution: United States (USA) 89%, Pakistan 6%, Ukraine 6%
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: villa-tech-inc-

Villa-Tech, Inc., founded in 2014 and based in Naperville, Illinois, is a private technology solutions provider with a workforce of 11 to 50 employees. The company specializes in networking, cloud services, and cybersecurity, offering a range of services that include software-defined networking, artificial intelligence, and managed services. Villa-Tech partners with businesses and organizations across various sectors to enhance operational efficiency and security. Their expertise extends to implementing advanced security frameworks, such as Zero Trust Architecture, and preparing organizations for Cybersecurity Maturity Model Certification (CMMC). With a commitment to quality and a proactive approach, Villa-Tech has established itself as a reliable partner for clients seeking to navigate the complexities of modern cybersecurity challenges. They also operate as a Minority Business Enterprise, catering to federal supplier needs, which adds to their credibility in the industry.

15. BuddoBot

• Website: buddobot.com
• Ownership type: Private
• Headquarters: O'Fallon, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2008
• Headcount: 51-200
• LinkedIn: buddobot

BuddoBot, founded in 2008 and based in O'Fallon, Illinois, is a cybersecurity and IT consulting company that offers a range of services aimed at protecting organizations from cyber threats. With a workforce of approximately 84 employees, BuddoBot has established itself as a key player in the cybersecurity field. The company specializes in offensive cybersecurity, providing services such as continuous adversary emulation, penetration testing, and advanced social engineering. They also offer information technology services, including cloud solutions and information security services. BuddoBot serves a variety of sectors, including the Department of Defense, federal and state agencies, healthcare, education, and financial services. Their proactive approach to risk management and compliance with security standards underscores their commitment to safeguarding critical systems and sensitive data.

16. ESPO Systems

• Website: esposystems.com
• Ownership type: Private
• Headquarters: Willowbrook, Illinois, United States (USA)
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: espo-systems

ESPO Systems, also known as ES Cyber Solutions, is a cybersecurity service provider based in Willowbrook, Illinois. Founded in 2009, the company specializes in managed security services, professional services, training, and staffing solutions tailored to meet the cybersecurity needs of businesses across various sectors. With a dedicated team of qualified engineers, ES Cyber Solutions deploys advanced security technologies and provides ongoing support to ensure effective management of cybersecurity systems. They address the critical skills gap in the industry by offering staffing solutions and training programs, thereby enhancing the capabilities of their clients' security teams. Their partnerships with prominent cybersecurity vendors such as Forcepoint, Fortinet, and Palo Alto Networks further solidify their position in the market, allowing them to deliver comprehensive security solutions that include cloud security, data protection, email security, endpoint security, and network security. ESPO Systems has built a reputation for customer satisfaction, evidenced by positive feedback from clients across various industries, including finance, education, healthcare, and manufacturing.

17. Integrity Technology Solutions

• Website: integrityts.com
• Ownership type: Private Equity
• Headquarters: Bloomington, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: November 2023
• Founded year: 1993
• Headcount: 11-50
• LinkedIn: integrity-technology-solutions

Integrity Technology Solutions, founded in 1993 and based in Bloomington, Illinois, is a private equity-backed IT service provider that specializes in managed security services and cybersecurity solutions. The company primarily serves businesses in the financial and healthcare sectors, offering a range of services that include IT support, compliance consulting, and data protection strategies. Integrity Technology Solutions positions itself as a full IT department for small and medium businesses, while also providing supplemental support for larger organizations. Their expertise in compliance, particularly with regulations like HIPAA and GLBA, underscores their commitment to helping clients manage sensitive data securely. The company has built a reputation for its responsive support and dedicated information security team, which is crucial for organizations facing evolving cybersecurity threats.

18. eDot

• Website: edotsolutions.com
• Ownership type: Corporate
• Headquarters: Rolling Meadows, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: November 2024
• Founded year: 1999
• Headcount: 11-50
• LinkedIn: edot

eDot Solutions, founded in 1999, is an IT services company based in Rolling Meadows, Illinois. With a workforce of 31 employees, eDot specializes in managed services, cybersecurity solutions, backup systems, and IT consulting. The company primarily serves businesses in the Chicago and Southern Wisconsin regions, but its client base extends across more than 15 states. eDot's offerings include advanced cybersecurity measures such as Endpoint Detection and Response (EDR), Dark Web Scanning, and a 24/7 Security Operations Center (SOC). Their engineers average over ten years of industry experience, ensuring a knowledgeable team dedicated to enhancing operational efficiency and security for their clients. eDot has maintained the same active ownership since its inception, which reflects stability and a consistent vision in a rapidly evolving industry.

19. Nitel

• Website: nitelusa.com
• Ownership type: Corporate
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 67%, Costa Rica 32%, Other 1%
• Latest funding: December 2024
• Founded year: 2003
• Headcount: 201-500
• LinkedIn: nitel

Nitel, founded in 2003 and based in Chicago, Illinois, is a technology services company that specializes in managed network solutions and security services. With a workforce of approximately 423 employees, Nitel focuses on simplifying complex technology challenges for businesses. Their service offerings include Global NaaS Solutions, SD-WAN, and a range of security services tailored for sectors like financial services, healthcare, retail, and wholesale. Nitel's commitment to enhancing network performance and security is evident in their solutions, which include advanced features like Zero Trust Network Access and Managed Next-Gen Firewall. The company emphasizes customer support and real-time visibility, ensuring that clients can effectively manage their network environments. Nitel's approach to network security is proactive, addressing the growing concerns of cyber threats in today's digital landscape.

20. CyberMaxx

• Website: cybermaxx.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 98%, Ireland 2%
• Latest funding: Other (Debt), March 2025
• Founded year: 2001
• Headcount: 51-200
• LinkedIn: cybermaxx

CyberMaxx, founded in 2001 and based in Chicago, Illinois, is a cybersecurity firm that provides specialized services in managed detection and response (MDR), threat hunting, and cyber resiliency. The company primarily serves sectors such as healthcare and financial services, focusing on helping organizations assess, monitor, and manage their cyber risks. CyberMaxx employs a proactive approach to security, integrating offensive and defensive strategies to enhance clients' security postures. Their offerings include 24/7 threat detection, incident response, and vulnerability risk management, all aimed at addressing the evolving challenges of cybersecurity. With a workforce of around 200 employees, CyberMaxx has established itself as a significant player in the cybersecurity field, emphasizing the importance of tailored solutions and strong partnerships to effectively combat cyber threats.

21. DefendEdge

• Website: defendedge.com
• Ownership type: Private
• Headquarters: Glen Ellyn, Illinois, United States (USA)
• Employee distribution: United States (USA) 98%, Germany 2%
• Founded year: 2017
• Headcount: 51-200
• LinkedIn: defendedge

DefendEdge, based in Glen Ellyn, Illinois, is a cybersecurity firm founded in 2017. The company specializes in managed security services and threat intelligence, providing tailored solutions to businesses across various sectors. With a dedicated U.S.-based Security Operations Center, DefendEdge offers 24/7 monitoring and support, ensuring real-time threat detection and response to cyber incidents. Their team, composed primarily of U.S. citizens and a significant percentage of veterans, emphasizes a commitment to national security and integrity. DefendEdge's services include managed detection and response, threat intelligence, penetration testing, and security assessments, all aimed at enhancing clients' cybersecurity posture. The company has not reported any funding, indicating a self-sustained growth model. Their proprietary threat intelligence platform, iDNA, further showcases their innovative approach to cybersecurity, allowing organizations to stay ahead of emerging threats.

22. Securion

• Website: securion.io
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 93%, Argentina 7%
• Founded year: 2014
• Headcount: 51-200
• LinkedIn: securion-llc

Securion, based in Chicago, Illinois, is a private security consulting firm founded in 2014. The company specializes in information security solutions, providing services that include penetration testing, vulnerability scanning, and identity access management. With a team of experienced consultants, Securion aims to help businesses navigate the complexities of cybersecurity. Their clientele includes large organizations from various sectors, indicating their capability to handle significant security challenges. Securion prides itself on being vendor-neutral, focusing solely on delivering effective security strategies tailored to the unique needs of each client. This approach allows them to align their interests with those of their clients, ensuring that the solutions provided are genuinely beneficial. The firm has not reported any funding, which suggests a stable operational model relying on its consulting expertise rather than external financial backing.

23. RedLegg

• Website: redlegg.com
• Ownership type: Private
• Headquarters: St. Charles, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2008
• Headcount: 51-200
• LinkedIn: redlegg

RedLegg, founded in 2008 and based in St. Charles, Illinois, is a cybersecurity company that specializes in delivering comprehensive security solutions tailored to the unique needs of its clients. With a workforce of approximately 68 employees, RedLegg focuses on sectors such as healthcare and finance, where safeguarding sensitive information is critical. Their service offerings include Managed Detection and Response (MDR), Penetration Testing, and various Advisory Services. RedLegg employs a hands-on approach, ensuring that their solutions are not only effective but also personalized to fit the specific security posture of each client. The company has built a reputation for its proactive strategies and commitment to continuous improvement in cybersecurity practices, making it a relevant player in the industry.

Network Security Insights: Key Companies in Illinois

Company	Headquarter	Size	Founded	Ownership
Trustwave	Chicago, Illinois, United States (USA)	501-1000	1995	Corporate
Cysiv MEA	Cairo, Illinois, United States (USA)	51-200	2008	Corporate
TechGuard Security	O'Fallon, Illinois, United States (USA)	51-200	2000	Private
Innovative Technology Solutions	Schaumburg, Illinois, United States (USA)	501-1000	1998	Private
DOT Security	Lake Forest, Illinois, United States (USA)	11-50	2021	Private
Resource Communications, Inc.	Lisle, Illinois, United States (USA)	11-50	1989	Private
onShore Security a CyberMaxx Company	Chicago, Illinois, United States (USA)	51-200	1991	Private
Entara	Chicago, Illinois, United States (USA)	51-200	2001	Private
Six Degrees Consulting	Chicago, Illinois, United States (USA)	11-50	2001	Private
ES Cyber Solutions	Willowbrook, Illinois, United States (USA)	51-200	2009	Private
UncommonX	Chicago, Illinois, United States (USA)	201-500	2012	Venture Capital
Keeper Security, Inc.	Chicago, Illinois, United States (USA)	201-500	2011	Private Equity
VikingCloud	Chicago, Illinois, United States (USA)	1001-5000	2019	Corporate
Villa-Tech, Inc.	Naperville, Illinois, United States (USA)	11-50	2014	Private
BuddoBot	O'Fallon, Illinois, United States (USA)	51-200	2008	Private
ESPO Systems	Willowbrook, Illinois, United States (USA)	51-200	2009	Private
Integrity Technology Solutions	Bloomington, Illinois, United States (USA)	11-50	1993	Private Equity
eDot	Rolling Meadows, Illinois, United States (USA)	11-50	1999	Corporate
Nitel	Chicago, Illinois, United States (USA)	201-500	2003	Corporate
CyberMaxx	Chicago, Illinois, United States (USA)	51-200	2001	Private
DefendEdge	Glen Ellyn, Illinois, United States (USA)	51-200	2017	Private
Securion	Chicago, Illinois, United States (USA)	51-200	2014	Private
RedLegg	St. Charles, Illinois, United States (USA)	51-200	2008	Private

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