Top Security Startups in 2026

Axio360 is the only cyber risk management platform to align security leaders, business leaders, and Boards of Directors around a single source of truth about their most critical corporate risks.

Trustpage, a Vanta company, is the only end-to-end security review platform helping customers self-serve security information, reduce repetitive questionnaires, and respond quickly and accurately to security questions. Trustpage joins Vanta as a layer of trust on top of cloud services to secure the internet, increase trust in software companies, and keep consumer data safe. To get started saving your team time, visit trustpage.com.

Cyberspatial develops a network mapping tool for cyber and IT professionals.

Diligent is the largest governance, risk and compliance (GRC) SaaS provider, serving more than one million users from over 23,000 organizations around the globe. Our modern GRC platform ensures boards, executives and other leaders have a holistic, integrated view of audit, risk, information security, ethics and compliance across the organization and up to the board.     Diligent brings technology, insights and confidence to leaders so they can build more effective, equitable and successful organizations. We empower 62% of the Fortune 500, 90% of the FTSE 100 and 83% of the ASX 200 to improve their bottom line, keep pace with stakeholder expectations and create lasting, positive impact on the world.  Diligent is valued at $7 billion with more than $500 million in revenue.

DroneShield helps your security force identify unauthorized drones using real-time alerts and digital evidence collection. An enterprise-grade sensor network with our patent-pending acoustic detection technology can sense drones that are invisible to radar or that lack radio-frequency links.

Escape helps Application Security teams automate API discovery, API inventory, and API security testing through agentless scanning. It leverages generative AI to discover and secure all your exposed APIs. You can test OWASP Top 10 and complex logic flaws at scale and empower your developers to adopt security in CI/CD. Escape requires no configuration to get started, no agent, and no proxy. It excels in securing GraphQL APIs.

Every major breach follows the same pattern: a high-risk action executed without real human authorization. GuardSuite stops that — before execution, not after. We're building the Runtime Governance Layer for Zero Trust. GuardSuite intercepts high-risk actions in real time and requires cryptographically-verified human approval — biometric, presence-bound, and tamper-proof — before anything executes. Not a firewall. Not a SIEM. A fundamentally different layer that eliminates the gap every other security tool leaves open. The technology is patent-pending. The category is new. We're first. VXM Secure is a Service-Disabled Veteran-Owned Small Business (SDVOSB) founded by Tom Madaras — a Navy veteran, Army National Guard paramedic, and 30-year technology leader who has built and secured infrastructure for the DoD, DOE, and NASA. We don't just sell to the federal government. We come from it. Our target customers are the organizations where a single unauthorized action can cause catastrophic damage: DoD and NSA programs, financial institutions, energy grid operators, and critical infrastructure at national scale. Average contract value: $500K–$2M per customer. We are pre-seed, raising $3M–$5M, with SYN Ventures as a strategic advisor. Our GuardMail Protocol has been submitted to the IETF for working group review — the standard-setting body for internet infrastructure. We're building a small founding team of elite engineers who want to solve hard security problems, earn meaningful equity, and work on technology that protects the systems the country depends on. If that's you — we'd like to meet you.

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.

Open-Source Development