Top Illinois Cybersecurity Startups (27)

Recognized by Crain’s as one of 2025’s Most Innovative Companies, UncommonX helps customers move from reactive defense to proactive resilience, with the context, prioritization, and insights needed to reduce risk and respond with precision. We believe cybersecurity should deliver more than alerts — it should deliver clarity, confidence, and control. That’s why we built an AI-powered Exposure Management platform that gives...

Rhodian Group helps businesses build and manage their network environments with predictably priced managed IT services so they can focus on their core strengths and growth initiatives. They also help businesses identify and reduce cybersecurity and non-compliance risks. Their combination of IT, cybersecurity, and compliance services helps businesses operate safely, while complying with industry mandates and regulatory requirements.

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...

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...

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...

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.

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.

Halborn is an award-winning, elite cybersecurity company for blockchain organizations. Halborn serves as your reputable partner to continuously assess an organization’s most vital assets, save time in your development lifecycle and provide world-class cybersecurity consulting and assessments every step of the way — far beyond smart contracts.

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...

Network Perception protects mission-critical assets by empowering cybersecurity and compliance teams to achieve high levels of cyber resiliency through verification, visibility, and velocity. Built by a government-funded research team of cybersecurity and industry experts in network security and critical infrastructure protection, the NP-View platform is the industry standard to verify network segmentation and visualize industrial control network environments. As a small,...

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.

Waratek is the Security-as-Code platform that enables security teams to automate the management of security behavior to reduce human error, remove false positives, and maintain lockstep with the rapid rate of code changes and deployments. Never before have security teams solved security at scale by protecting every application in their enterprise or patching vulnerabilities at scale with modern application development...

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.

Reclaim your time and focus on your business by leaving the IT solutions to us. PCS International is a comprehensive solution provider satisfying the Information Technology hardware, software, and professional service requirements for small & medium businesses. We are committed to offering cutting-edge technologies with outstanding customer support at a great value.

Anansi Cyber is a cybersecurity firm that specializes in penetration testing and helping our clients find vulnerabilities. We apply scenarios that are leveraged by threat actors and APTs to uncover vulnerabilities that may affect client networks and provide the most robust information in how to best secure their environments to help improve their security posture.

Paragon is focused on your productivity and success. We work with government agencies like the U.S. Transportation Command, U.S. Air Force Air Mobility Command, Department of Education, and the Internal Revenue Service. What distinguishes us is our dedication to delivering value, to new ideas, to our employees, and to you and your mission. The test for any organization or business is...

MD Office Mail (MDOM) provides all the ancillary IT services that ensures HIPAA Compliance for individual doctors, small & large clinics and hospitals. Our services include encrypted email, secure fax and VoIP phone lines. We provide secure and HIPAA compliant email service for healthcare service providers which looks & feels as comfortable as a regular email services. We provide end-to-end...

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...

Scalesology is a data analytics, software development, and cybersecurity consulting company. Our services scale your processes, systems, data, and analytics to transform your business and improve your bottom line. We are technology agnostic and security conscious, focused on finding the right solution for your business needs, not trying to conform your business to a prescribed technology solution.

Head of Security LLC is a premier security risk management consulting firm dedicated to safeguarding your assets, operations, personnel, and reputation. Specializing in physical, operational, personal, and business security management, our team of highly skilled Security Management Consultants provides tailored, actionable solutions. Through in-depth threat risk assessments, strategic recommendations, and comprehensive implementation, we equip businesses, organizations, properties, and communities with robust...