Security Startups

Company directory

17 companies. Sorted by name. No paid boost.

A

Aqua Security

Burlington, United States

  • Series E
  • $325M raised
  • Founded 2015

Code-to-runtime CNAPP that ranks CVEs by live workload behavior and can stop an exploit without waiting for a patch.

Raised $60M at a $1B-plus valuation, January 2024

ARMO

Tel Aviv, Israel

  • Series A
  • $35M raised
  • Founded 2019

Kubernetes-rooted CNAPP and CADR, built on CNCF Kubescape, that uses eBPF runtime to decide which CVEs and misconfigs matter.

Kubescape 4.0 released with runtime threat detection GA, March 2026

Aryon Security

Tel Aviv, Israel

  • Series A
  • $38M raised
  • Founded 2024

Cloud policy enforcement that blocks misconfigs and over-privilege at deploy time, before CSPM has anything to scan.

Raised $29M Series A, June 2026

C

CyCognito

Palo Alto, United States

  • Series C
  • $153M raised
  • Founded 2017

Seedless external attack-surface discovery that finds cloud, subsidiary, and third-party assets attackers can actually reach.

Named a Leader and Outperformer in the 2026 GigaOm Radar for Attack Surface Management

I

IONIX

Tel Aviv, Israel

  • Series A
  • $50.3M raised
  • Founded 2016

External attack-surface platform that discovers cloud, subsidiary, and supply-chain assets, then validates which exposures are actually exploitable.

Added $15M to Series A, bringing total funding to $50.3M, February 2024

M

Mitiga

New York, United States

  • Series B
  • $82M raised
  • Founded 2019

Cloud, SaaS, identity, and AI detection and response with a forensic lake built for attacks that never touch an endpoint agent.

Raised $30M Series B led by SYN Ventures, January 2025

O

Orca Security

Portland, United States

  • Series C
  • $640M raised
  • Founded 2019

Agentless CNAPP that SideScans cloud disks and APIs for the full estate without installing a workload agent.

Named a Strong Performer in The Forrester Wave: Cloud Native Application Protection Solutions, Q1 2026

R

RAD Security

San Francisco, United States

  • Series A
  • $20M raised
  • Founded 2021

Behavioral runtime CDR for Kubernetes and AI workloads, fingerprinting what a cluster should do so zero-days show up as drift.

Raised $14M Series A, February 2025

S

Skyhawk Security

Tel Aviv, Israel

  • Series A
  • $35M raised
  • Founded 2022

AI purple team that replays CNAPP and SIEM findings against a digital twin to prove which cloud CVEs are actually weaponizable.

Named a CRN 2025 Stellar Startup for the third consecutive year, November 2025

Sonrai Security

New York, United States

  • Series C
  • $89M raised
  • Founded 2017

Cloud permissions firewall that enforces least privilege on humans, machines, and AI identities using native AWS, Azure, and GCP controls.

Reported 4x ARR growth as Cloud Permissions Firewall adoption surged, January 2026

Stream Security

Tel Aviv, Israel

  • Series B
  • $55M raised
  • Founded 2020

Cloud detection and response on a live CloudTwin of every workload, identity, and network path.

Raised $30M Series B, October 2024

Sweet Security

Tel Aviv, Israel

  • Series B
  • $120M raised
  • Founded 2023

Runtime CNAPP that watches cloud and AI agents as they act, then turns the finding into a guardrail.

Raised $75M Series B, November 2025

Sysdig

San Francisco, United States

  • Series G
  • $744M raised
  • Founded 2013

Runtime CNAPP built on kernel-level system calls, Falco detections, and AI agents that act inside the tools you already run.

Named a Leader in The Forrester Wave: Cloud Native Application Protection Solutions, Q1 2026

T

Tamnoon

Sammamish, United States

  • Series A
  • $17M raised
  • Founded 2022

Human-plus-AI cloud remediation that closes CNAPP findings without breaking the workload that owns them.

Raised $12M Series A, September 2024

Tigera

San Francisco, United States

  • Series B
  • $65M raised
  • Founded 2016

Calico-powered Kubernetes network security and microsegmentation, plus Lynx for governing AI agent calls on the cluster.

Shipped the Winter 2026 Calico Cloud release with an AI assistant and multi-cluster traffic observability, March 2026

U

Upwind

San Francisco, United States

  • Series B
  • $430M raised
  • Founded 2022

Runtime-first CNAPP that ranks cloud risk from what is actually running, not from a static CVE dump.

Raised $250M Series B at a $1.5B valuation, January 2026

V

Valarian

London, United Kingdom

  • Series A
  • $70M raised
  • Founded 2020

Control architecture that runs sensitive AI and high-consequence workloads in customer-controlled, compartmentalised environments, including on hyperscaler clouds.

Raised a $50M Series A led by New Enterprise Associates, July 2026