Series A Cybersecurity companies in New York

Echo delivers frontier-hardened software across the enterprise software supply chain. Echo Containers, libraries, OS packages, VMs, and more are continuously vetted for supply chain threats and patched against vulnerabilities. With Echo, developers and agents can build with secure-by-default software that’s compatible with the tools and versions they already use.

• Series A
• 82 employees
• Founded 2025

Strike redefines offensive security with an always-on Continuous Hybrid Validation platform.It combines AI-driven execution with expert human validation to help large organizations reduce their actual risk exposure.Autonomous agents discover assets and run deep threat simulations across the entire attack surface. The Hacking Governance team validates findings, removes noise, and ensures real, actionable results.Our differentiators:• Deep attack simulations: We continuously simulate complex attacks, tailored to each organization's context, business logic, and attack surface.• More accurate results thanks to years of penetration testing: Our AI is powered by a proprietary data layer built from thousands of hours of penetration testing and real-world validations in complex environments.• Offensive security designed to evolve: Strike enables a shift from isolated assessments to a continuous offensive validation practice, aligned with the speed and complexity of today's environment.• Evolution of PtaaS towards an always-on modelStrike's track record in offensive security and PtaaS allows us to combine automation, human expertise, and strategic support into a single, continuous experience.• Enterprise-readyWe help demanding organizations operate with greater visibility, control, and governance over their offensive security.• From Latin America for Latin AmericaWe speak the language and understand the customs, we understand the regulators, and we operate in the same time zone.This is what the new generation of offensive security looks like: designed for environments that never stop changing.

• Series A
• 81 employees
• Founded 2021

Clutch is the identity security platform for the AI era. As AI agents multiply across the enterprise, the identity landscape has fundamentally changed. Agents inherit human access, act autonomously, and authenticate through the same credentials that have been ungoverned for decades: service accounts, API keys, OAuth apps, tokens, and secrets.Clutch's Identity Lineage® graph maps every non-human identity, AI agent, and secret to its origin, the people connected to it, and the resources it can reach. That context is what makes risk actionable, detection accurate, and governance possible at scale.Built by practitioners. Trusted by Fortune 500 enterprises.

• Series A
• 77 employees
• Founded 2023

Managed security services, rebuilt for SecOps. Traditional MDR can’t keep up with modern threats. AI SOC tools help with investigations, but still require a SOC team. Daylight introduces Managed Agentic Security Services (MASS), a new model where AI agents and security experts run your security operations together.

• Series A
• 76 employees
• Founded 2025

We’ve entered the Mythos era. Today, AI adversaries see your entire board, autonomously chaining together hidden gaps to weaponize exposures at machine speed. Defending against this unfair advantage requires a shift away from reactive chaos and into a completely new operating rhythm.Nagomi Security is the pioneer of Agentic Exposure Operations. We build scalable defense for the AI era by extending your team with AI Exposure Eliminators, that continuously map, neutralize, and close threat pathways at the root. Instead of giving security teams more homework, Nagomi handles the heavy operational lifting while keeping your team firmly in the driver's seat.We believe the best time to build an unbreakable defense is during peacetime, not when you're already under siege. Nagomi is how modern organizations finally do less and secure more—ensuring that when adversaries make their move, you’ve already made yours.

• Series A
• 69 employees
• Founded 2023