Top Cyber Security Startups in 2026

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ReliaQuest provides a SaaS security platform designed to minimize data loss and business disruptions. Its GreyMatter platform delivers visibility across SIEM, EDR, and multi-cloud environments to speed detection and response while maturing security investments to deliver security confidence. The company was founded in 2007 and is headquartered in Tampa, Florida.

SpyCloud is a developer of a prevention platform used to prevent users' accounts and thwart online fraud. Its platform provides early data recovery, data cleansing, password cracking, and automated remediation that enable businesses to safeguard the identity of their employees, consumers, and suppliers. It helps businesses of all sizes prevent data breaches and account takeover attacks by alerting when employee or company assets have been compromised. The company accomplishes this through an early-warning breach detection service powered by a team of intelligence analysts.

Soteria is a Disabled Veteran owned Cyber Security firm headed by experienced former members of the NSA, CIA, DoD., and Fortune 500 corporations. With Consultants based in Charleston, Atlanta, Washington D.C., and the San Francisco bay area, Soteria is ready to deploy quick reaction incident handlers to address security concerns for all of our clients.

AgileEngine is a Miami-based software development company with R&D centers across Latin America, Europe, and Asia. We’ve been among the Inc. 5000 fastest-growing companies for 5 consecutive years and made it to the top 15 app developers globally. Fortune 500 enterprises, Emmy-winning media brands, and technology experts from Google and Nokia entrust mission-critical software to us. Why? Our team comprises top-3% tech talent, and we know the ins and outs of delivering products that consistently wow users.

Armor offers a unique hosting environment that includes being protected by the Armor security stack. Along with this customers get the benefit of 24/7 technical support, as well as 24/7 security monitoring and response. Armor also offers Armor Anywhere, which is an agent that can be placed in any cloud environment that connects customers to specified security and resource monitoring.

Forcepoint, powered by Raytheon, safeguards users, data and networks against the most determined adversaries, from accidental or malicious insider threats to outside attackers, across the entire threat lifecycle. Forcepoint protects data everywhere – in the cloud, on the road, in the office – simplifying compliance and enabling better decision-making and more efficient remediation. Forcepoint empowers organizations to concentrate on what’s most important to them while automating routine security tasks. More than 20,000 organizations around the world rely on Forcepoint. Based in Austin, Texas, with worldwide sales, service, security laboratories and product development, Forcepoint is a joint venture of the Raytheon Company and Vista Equity Partners.

Critical Start is a Managed Detection and Response (MDR) provider built for outcomes. We combine expert analysts and clear service-level agreements to deliver speed, accuracy, and transparency. We reduce noise with precision alert handling. Threats are escalated to our analysts. Non-threats are resolved with full context. Every alert is classified and every decision is visible in a unified timeline. You always know what’s happening and why. Our SOC is staffed 24x7x365 with analysts trained to act fast. We guarantee a 10-minute notification for critical alerts and a 60-minute mean time to respond for all alerts. These SLAs are contractual, not vague promises. We integrate directly with the tools you already use. That means faster containment, fewer delays, and no need to rip and replace. Our Signal Assurance process also identifies blind spots, missed log sources, and hidden assets, giving you full coverage across endpoint, cloud, identity, OT, and more. When a threat hits, we don’t just tell you. We respond. If your current MDR only notifies, or leaves you unsure what’s being monitored, it may be time for something better. Let us handle the alerts. You stay focused on what comes next.

DomainTools is the global leader for internet intelligence and the first place security practitioners go when they need to know. The world's most advanced security teams use our solutions to identify external risks, investigate threats, and proactively protect their organizations in a constantly evolving threat landscape. DomainTools constantly monitors the Internet and brings together the most comprehensive and trusted domain, website and DNS data to provide immediate context and machine-learning driven risk analytics delivered in near real-time. Visit domaintools.com to experience firsthand why DomainTools is the first stop for advanced security teams when they need to know.