Top Illinois Cybersecurity Startups (37)

Empirical builds mathematical models for security data. We maintain the world’s most advanced global models for cybersecurity, and we build local models that respond to your enterprise’s specific context and threat landscape.

KaiHonua is a Native Hawaiian Organization-owned small disadvantaged technology company providing information-technology services to the U.S. Department of Defense. Its mission is to support warfighters, help veterans, and protect the nation through mission-critical technology expertise, operational support, and management experience. Capabilities include infrastructure, network and software engineering, cybersecurity, intrusion detection, network security, systems security, contract staffing, and project implementation services.

We are Verity IT, your trusted partner in managed IT services, cybersecurity, and cloud solutions. Our mission is to empower businesses with seamless, secure technology solutions that drive productivity and resilience. ? Mission: To deliver reliable, secure IT services that enable businesses to thrive and adapt in an ever-evolving digital landscape. ? Vision: To be the preferred IT partner for businesses, providing...

Chi Networks is a Chicago-headquartered managed service provider delivering cloud and managed IT solutions to organizations. Its offerings include Infrastructure as a Service, Virtual Desktop Infrastructure, private and hybrid cloud, hosted environments, help-desk support, and integrated security and network operations. The company emphasizes tailored technology services, 24/7 support, data-center operations, cybersecurity, and infrastructure management to improve customers’ security, performance, and...

We help enterprise organizations design, implement, and sustain their most critical security and technology programs. Our work spans four core disciplines: cybersecurity solution design and delivery across IAM, Data Security, Network Security, Threat & Vulnerability Management, CDR & Application Security, GRC & Compliance, AI Security, Quantum Security, and OT Security; program and project management that keeps complex, multi-stakeholder initiatives on...

SecurTec is a security firm providing institutional-grade physical protection, cybersecurity, and strategic advisory services to government and private clients on a global scale. The company specializes in delivering tailored security solutions that mitigate risks, safeguard critical assets, and ensure uninterrupted operations across diverse sectors, including energy and critical infrastructure.

Paragon Micro Inc. is a full-service global IT solutions provider, technology business advisor, and IT reseller. The company specializes in helping business and public sector clients, including federal agencies, solve complex IT challenges through a comprehensive portfolio of services encompassing hardware, software, cybersecurity, cloud computing, network infrastructure, and modern workplace solutions.

Fingerprint empowers developers to stop online fraud at the source. We work on turning radical new ideas in the fraud detection space into reality. Our products are developer-focused and our clients range from solo developers to publicly traded companies. Some of our customers include Coinbase, Booking.com, Yahoo, and eBay just to name a few. We are a globally dispersed, 100% remote company...

TradingBlock was recently named the 2025 Best Brokerage for Options Trading by Benzinga based on our commitment to providing investors, active traders, and investment professionals intuitive, fully customizable brokerage and trading solutions.

You rely on technology every day, but is it really working for you? Maybe it feels like IT is just one more thing holding your business back. You’ve dealt with recurring issues, sluggish support, missed opportunities, and rising security risks. You’ve invested time and money, but it’s not translating into real progress—or a competitive advantage. You want more than a vendor. You want a...

NowSecure’s mission is to save the world from unsafe mobile apps. Founded in 2009, we are exclusively a mobile first, mobile only app security testing automation company that maintains deep roots within the security community, sponsoring open-source tools like Frida, Radare and r2frida.

We cybersecure your organization. LeadingIT provides fast+friendly cybersecurity and technology (unlimited) support for nonprofits, manufacturers, schools, accounting firms, religious organizations, government, and law offices with 10-200 employees across the Chicagoland area.

Since 2003, Clark Schaefer Consulting has been providing superior accounting, control and technology/cybersecurity services to the business community. The Firm has an established reputation for delivering outstanding and customizes solutions for a reasonable cost. Integrity, quality, respect, and innovation are all values that we deliver to our clients, and are therefore traits found in our employees. Subsequently, as a Firm,...

Experiencing a security incident? Contact us for immediate support and we will respond within 15-minutes to begin the containment and recovery process. https://www.entaracorp.com/report-an-urgent-cybersecurity-incident Entara sets the standard as the world’s first eXtended Service Provider (XSP) and delivers exceptional, security-first IT solutions for their clients, including managed IT and cybersecurity services, incident response services, and other professional services. Founded in 2001, the...

S.R. Snodgrass, P.C. is an independent accounting and consulting firm founded in 1946. They provide personalized tax, assurance, technology, risk analysis, and financial advisory services. The firm is highly specialized in serving community banks and nonprofit organizations, emphasizing a personalized approach to customer service and stability.

At oak9, we are passionate about removing the friction between development and security so that businesses can achieve development velocity and agility without compromising on security. We are a SaaS company with a cloud native security automation platform that analyzes infrastructure-as-code and seamlessly integrates into existing development workflows to build applications that are secure and compliant by design.

Cyberyn helps trucking and logistics companies reduce cyber risk without disrupting operations. We protect endpoints, stop ransomware, test real-world attack scenarios, train employees to spot threats, and monitor systems 24/7 through our SOC. Built for fleets, dispatch, and growing transportation businesses.

Founded in 2015, we help companies big and small alike manage and audit access to their databases, servers, clusters, and web applications.

Cog Systems, a cyber security company. Cog built and enabled the world's most secure connected devices, provided advanced operating system and platform development products and services for smart, connected and IoT devices. Our founding staff developed the OKL4 Microvisor at Open Kernel Labs (acquired by General Dynamics C4 Systems) and have each more than decade of specialist experience in the field, including...

We are at the forefront of Gen AI cybersecurity using Microsoft Defender XDR + Microsoft Sentinel, powered by Microsoft Copilot for Security and our expert insights. We offer 24x7 comprehensive managed Extended Detection and Response (XDR), Identity Threat Detection & Response (ITDR), Data Security and Security Exposure Management services. Numerous leading mid-sized organizations operating in 37+ countries across 4 continents depend...