The information security industry in Illinois is crucial to safeguarding digital assets in an increasingly interconnected world. Companies in this sector provide essential services that include managed security solutions, compliance consulting, and incident response. As threats become more sophisticated, these firms are innovating to stay ahead, integrating technologies like artificial intelligence and machine learning into their offerings. Moreover, the surge in remote work has heightened the demand for robust security measures. This positions Illinois as a significant hub for cybersecurity firms, reflecting both a local commitment to safety and a response to global shifts in technology.

This list highlights 21 noteworthy information security companies based in Illinois, showcasing a mix of sizes and specializations. Ranging from small firms with under 50 employees to larger enterprises with more than 1,000, these companies were founded between 1993 and 2019. They operate in key areas like managed services, threat detection, and compliance for sectors including healthcare and finance. Most are headquartered in urban centers such as Chicago and Schaumburg, emphasizing the city's role as a central player in the information security landscape.

Read on to learn more about the top information security companies in Illinois.

Top 21 Information 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 range of security services. The company offers managed detection and response, database security, incident response, and various advisory services aimed at helping organizations safeguard their sensitive data. With a workforce of over 1,000 employees distributed across multiple countries, Trustwave operates on a global scale, catering to clients in sectors such as finance, healthcare, and retail. Their proactive approach to cybersecurity is exemplified by their 24/7 threat detection and incident response capabilities, which are supported by their SpiderLabs team of experts. Trustwave's commitment to innovation and security is further highlighted by their recognition in industry reports, underscoring their role as a key player in the cybersecurity landscape.

2. 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 comprehensive cybersecurity solutions. The company focuses on risk management, security awareness training, and compliance consulting, catering to a variety of clients, including government agencies and businesses. TechGuard has established itself as a trusted partner in protecting critical infrastructure and sensitive data from cyber threats. With a workforce of approximately 93 employees, the firm has a notable presence in the cybersecurity industry, having developed proprietary solutions like DEFEND360™ for total protection. Their services include vulnerability assessments, incident response planning, and training programs aimed at enhancing organizational security posture. TechGuard has also been recognized for its thought leadership and innovative approaches, contributing to its reputation as a respected player in the cybersecurity field.

3. 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 has carved out a niche in cybersecurity, cloud solutions, and managed services, catering to a variety of sectors. DYOPATH focuses on helping businesses enhance their operational efficiency while mitigating risks associated with cyber threats. Their service offerings include advanced security services, cyber and security assessments, and regulatory compliance, which are critical in today's digital landscape. The firm emphasizes a proactive approach to cybersecurity, ensuring that clients are not only protected but also prepared for potential threats. With a workforce of around 132 employees, DYOPATH is positioned to deliver tailored IT solutions that meet the unique needs of its clients, reinforcing its role in the information security industry.

4. 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 managed detection and response (MDR) services, threat hunting, and cyber resiliency solutions. The company primarily serves businesses in the healthcare and financial services sectors, helping them assess, monitor, and manage cyber risks effectively. With a workforce of approximately 209 employees, CyberMaxx emphasizes a tech-enabled approach to security, integrating advanced technologies to enhance their service offerings. Their commitment to continuous threat exposure management and proactive threat hunting reflects a deep understanding of the evolving cybersecurity landscape. CyberMaxx also engages in independent threat research, contributing to the broader industry knowledge base. They have not reported any recent funding, indicating a self-sustaining business model.

5. 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-owned IT service provider that specializes in managed security services and cybersecurity solutions. The company primarily serves businesses in the financial and healthcare sectors, where compliance and data protection are paramount. Integrity Technology Solutions offers a comprehensive suite of services, including IT support, compliance consulting, and data protection strategies. Their team includes certified security advisors who assist clients in achieving compliance with regulations such as HIPAA and GLBA. The firm operates a fully staffed help desk and a dedicated information security team, ensuring that clients receive immediate support and expert guidance. Integrity Technology Solutions emphasizes the importance of proactive cybersecurity measures and provides tailored solutions to help organizations mitigate risks associated with evolving cyber threats. They also engage in community initiatives, such as establishing a scholarship for students in the IT field, reflecting their commitment to the industry and its future.

6. 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, based in Willowbrook, Illinois, has been a player in the cybersecurity sector since its founding in 2009. The company offers a range of services including managed security services, professional services, training, and staffing solutions. They cater to businesses across various sectors, helping them safeguard their IT infrastructure against cyber threats. With a focus on bridging the skills gap in cybersecurity, ES Cyber Solutions leverages expert knowledge to ensure effective use of security technologies. Their partnerships with notable vendors like Forcepoint, Fortinet, and Palo Alto Networks enhance their service offerings, allowing them to deploy advanced security solutions efficiently. The company has garnered positive feedback from clients, indicating a strong track record in customer satisfaction and project execution.

7. 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 that has been operational since 2001. The company specializes in cybersecurity solutions, providing a range of services that include email and cloud collaboration security, network security, and cloud infrastructure. With a team of 11 to 50 employees, Six Degrees Consulting focuses on assisting businesses in navigating complex IT challenges and implementing effective security measures. They leverage partnerships with well-known technology firms such as Check Point and Oracle to deliver high-quality solutions. The firm has built a reputation for its expertise in email security, recently recognized by Enterprise Security magazine as a top provider in this area. Their approach combines technical knowledge with a strong emphasis on customer relationships, ensuring tailored solutions that meet the specific needs of their clients. Six Degrees Consulting's commitment to cybersecurity and their extensive experience in the field position them as a relevant player in the information security industry.

8. 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 founded in 2021. The company specializes in providing a range of services designed to protect businesses from cyber threats. Their offerings include risk assessments, compliance services, endpoint protection, and cybersecurity consulting. DOT Security aims to cater to the unique needs of each client, ensuring that their security solutions are comprehensive and effective. The firm operates entirely within the United States and has a dedicated team of experts who focus on proactive monitoring and tailored cybersecurity strategies. Their commitment to maintaining a Security Operations Center in the U.S. further emphasizes their focus on confidentiality and security. Although DOT Security has not reported any funding, their rapid establishment and growth in response to the increasing demand for cybersecurity services during the COVID-19 pandemic highlight their relevance in the industry.

9. 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 provides a wide range of services aimed at protecting sensitive information and critical systems. With a workforce of approximately 84 employees, BuddoBot specializes in offensive cybersecurity, cloud solutions, and information security. Their offerings include continuous adversary emulation, penetration testing, and vulnerability management, which are crucial for organizations facing increasing cyber threats. The company has built a reputation for serving various sectors, including the Department of Defense, federal and state agencies, healthcare, education, and financial services. BuddoBot emphasizes proactive risk management and compliance with security standards, ensuring that their clients are equipped to handle potential vulnerabilities. Their commitment to safeguarding national security and critical infrastructure underscores their relevance in the cybersecurity industry.

10. 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, based in Chicago, Illinois, is a private IT service provider founded in 2001. With a workforce of approximately 95 employees, the company has carved out a niche in cybersecurity solutions. They offer a comprehensive suite of services, including managed IT services, incident response, and strategic risk management. Entara's expertise is particularly pronounced in sectors such as financial services and insurance, where they assist organizations in navigating complex IT challenges and mitigating cybersecurity risks. Their incident response capabilities are noteworthy, as they help clients recover from significant cyber incidents, including ransomware attacks. The company emphasizes a security-first approach, integrating cybersecurity measures into all their services to ensure clients are well-protected against evolving threats. Their proactive strategies, such as vulnerability management and continuous monitoring, further enhance their relevance in the cybersecurity field.

11. HALOCK Security Labs

• Website: halock.com
• Ownership type: Private
• Headquarters: Schaumburg, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1996
• Headcount: 11-50
• LinkedIn: halock-security-labs

HALOCK Security Labs, based in Schaumburg, Illinois, is a cybersecurity consulting firm founded in 1996. With a team of approximately 33 employees, HALOCK specializes in risk management and information security, providing a range of services tailored to meet the unique needs of their clients. Their offerings include incident response, compliance advisory, penetration testing, and virtual CISO services. HALOCK serves a variety of industries, including healthcare, financial services, and education, demonstrating their adaptability to different sectors. The firm is also known for its contributions to the industry, particularly in developing risk assessment frameworks like the Duty of Care Risk Analysis (DoCRA). This involvement positions HALOCK as a knowledgeable partner for organizations seeking to enhance their cybersecurity measures and navigate the complexities of compliance and risk management.

12. 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 company that specializes in providing managed security services, threat detection, and PCI compliance solutions. With a workforce of around 648 employees, the company serves a variety of clients, particularly in the finance and healthcare sectors, where safeguarding sensitive data is critical. VikingCloud's offerings include vulnerability scanning, penetration testing, and endpoint security, all designed to help businesses identify and mitigate cybersecurity risks. Their Asgard Platform serves as a central hub for cybersecurity and compliance, showcasing their commitment to innovative solutions in the industry. The company has not reported any funding since its inception, indicating a self-sustaining operational model as it continues to grow and adapt to the changing cybersecurity landscape.

13. 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 founded in 2008. The company specializes in automated solutions that address risk and exposure management, network security, and threat detection. Cysiv MEA serves a variety of sectors, helping organizations to manage their cyber risks and ensure compliance with industry standards. Their platform is designed to support both managed and unmanaged assets, providing a scalable approach to cybersecurity. While there is no recent funding reported, the company continues to operate actively in the cybersecurity space, contributing to the protection of businesses against evolving threats.

14. Abira Security

• Website: abirasecurity.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2019
• Headcount: 51-200
• LinkedIn: abira-security

Abira Security, based in Chicago, Illinois, is a cybersecurity firm founded in 2019. The company specializes in providing comprehensive security solutions tailored to businesses and organizations. Their service offerings include penetration testing, advisory services, incident response readiness, and data protection. Abira Security is particularly focused on integrating security into digital transformation initiatives, ensuring that organizations can innovate while managing cybersecurity risks effectively. They also emphasize the importance of compliance and fostering a culture of security among their clients. With a team of experienced professionals, including former CISOs, Abira Security aims to deliver customized approaches to address individual client needs. Their commitment to proactive risk assessments and continuous improvement in security practices positions them as a notable entity in the cybersecurity sector.

15. 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, offering a range of solutions designed to protect businesses from cyber threats. Their U.S.-based Security Operations Center (SOC) provides round-the-clock monitoring and support, ensuring real-time threat detection and response. DefendEdge's services include managed security, managed detection and response, threat intelligence, penetration testing, and security assessments. The firm emphasizes building strong relationships with clients and tailoring their services to meet specific security needs. With a workforce primarily composed of U.S. citizens, including a notable percentage of veterans, DefendEdge prioritizes integrity and trust in its operations. The company has not reported any funding, indicating a self-sustained growth model. Their involvement in various sectors, including financial services, healthcare, and telecommunications, showcases their adaptability and expertise in addressing unique cybersecurity challenges across industries.

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. They cater to businesses across multiple sectors, helping organizations navigate the complexities of cybersecurity. ES Cyber Solutions addresses the pressing skills gap in the industry by offering staffing solutions and training programs, ensuring that clients have access to qualified professionals. Their service offerings include cloud security, data loss prevention, email security, endpoint security, and network security, among others. The company partners with notable technology vendors to deliver effective security solutions, demonstrating their commitment to staying current with industry standards and practices.

17. Latacora

• Website: latacora.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2016
• Headcount: 11-50
• LinkedIn: latacora

Latacora, founded in 2016 and based in Chicago, Illinois, is a private security consulting firm with a focus on developing and maintaining information security practices for technology-oriented businesses. With a team of 43 employees, Latacora offers a range of services including Virtual Chief Information Security Officer (vCISO), Risk & Compliance, Application Security, and Detection and Response. The firm primarily serves clients in regulated sectors such as healthcare and fintech, helping them navigate complex compliance requirements and enhance their security frameworks. Latacora's methodology involves long-term engagement with clients, allowing them to build security capabilities that can eventually be transitioned in-house. Their commitment to ongoing support and tailored solutions positions them as a significant contributor to the information security industry.

18. 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 firm that specializes in Exposure Management. The company has developed a platform that provides visibility and protection against cyber threats, catering to various industries including education, healthcare, and finance. Their offerings include Managed Detection and Response (MDR), Vulnerability Management, and 24/7 Managed Security Operations Center (SOC) support. UncommonX has received significant funding, with a Series A round totaling $9.5 million in December 2021, indicating investor confidence in their technology and market potential. The company holds 26 patents for its innovative solutions, showcasing its commitment to advancing cybersecurity practices. UncommonX aims to optimize security operations for its clients by integrating existing tools and providing real-time risk analysis, making it a relevant player in the information security sector.

19. AGB Investigative Services

• Website: agbinvestigative.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2001
• Headcount: 501-1000
• LinkedIn: agb-investigative

AGB Investigative Services Inc., founded in 2001 and based in Chicago, Illinois, is a private security services company that specializes in both physical and cyber security solutions. With a workforce of approximately 242 employees, AGB offers a comprehensive range of services, including security consulting, managed security services, and private investigations. The company caters to businesses and organizations aiming to safeguard their assets and data against various security threats. AGB is recognized for its commitment to community safety and workforce development, actively engaging in initiatives that support local economies and promote job creation. Notably, AGB is the largest Black-owned security firm in the United States and has achieved national recognition for its innovative security services, boasting a 94% past-performance rating from Dun & Bradstreet. Their leadership team, comprised of security experts with extensive law enforcement backgrounds, emphasizes a meticulous approach to risk assessment and security strategy development.

20. 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. With a workforce of approximately 504 employees, the company serves a variety of clients, including individuals, businesses, and managed service providers. Their product suite includes a password manager, privileged access manager, secrets manager, and remote browser isolation tools. Keeper Security is committed to protecting sensitive information and managing access to critical data effectively. The company has also made strides in educating the public on cybersecurity issues, positioning itself as a trusted resource in the industry. Their recent funding activity, although undefined, suggests ongoing investment in their growth and innovation efforts.

21. 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. With a workforce of approximately 51-200 employees, the company focuses on managed security services, offering solutions like Managed Detection and Response (MDR) and Security Orchestration. Their clientele spans various sectors, including banking and construction, where they help organizations mitigate cybersecurity risks and ensure compliance with regulations. onShore Security has developed proprietary technologies, such as the Panoptic SIEM and Panoptic Sensor, which enhance their ability to monitor and respond to threats effectively. Their services are designed to provide continuous network vigilance, ensuring that clients can operate with confidence in their cybersecurity posture. The company has been recognized in the industry, including being named to MSSP Alert’s 2023 List of Top 250 MSSPs, highlighting their relevance and expertise in the cybersecurity field.

Information Security Insights: Key Companies in Illinois

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