Security Startups

Company directory

23 companies. Sorted by name. No paid boost.

A

AppOmni

San Mateo, United States

  • Series C
  • $123M raised
  • Founded 2018

SaaS security posture for Salesforce, ServiceNow, Microsoft 365, and the agents now living inside them.

Reported 43% year-over-year revenue growth and five of the top 10 Fortune 500 as customers, February 2025

AttackIQ

Los Altos, USA

  • Series C
  • Founded 2013

Security control validation platform built around MITRE ATT&CK and purple-team testing.

Named among 2026 CTEM and BAS alternatives in independent vendor comparisons

C

Cloudsmith

Belfast, United Kingdom

  • Series C
  • $124M raised
  • Founded 2016

Universal artifact control plane for what AI and humans actually put into production.

Raised $72M Series C led by TCV and Insight Partners, April 2026

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

Cynet

Boston, USA

  • Series C
  • $79M raised
  • Founded 2014

All-in-one XDR agent for teams that cannot staff a SOC or buy seven point products.

Named Leader and Outperformer in the 2026 GigaOm Radar for XDR

F

Fortanix

Santa Clara, United States

  • Series C
  • $122M raised
  • Founded 2016

Confidential computing and key management so data stays encrypted while AI and apps use it.

Joined Cisco Secure AI Factory with NVIDIA for Confidential AI inference, June 2026

G

GitGuardian

Paris, France

  • Series C
  • $108M raised
  • Founded 2017

Secrets detection plus NHI lifecycle, from leaked keys in git to the agents still using them.

Raised $50M Series C led by Insight Partners, February 2026

I

Intezer

New York, USA

  • Series C
  • $60M raised
  • Founded 2016

Forensic-grade AI SOC that investigates 100% of alerts, including the low-severity ones MDR skips.

Expanded AI SOC platform for teams outgrowing MDR, March 2026

IRONSCALES

Atlanta, United States

  • Series C
  • $80M raised
  • Founded 2013

AI email security that mixes automated remediation with a network of admin-reported phishing.

Launched Winter 2026 agentic release with Red Teaming, Phishing SOC, and Simulation agents, March 2026

M

Material Security

San Francisco, United States

  • Series C
  • $100M+ raised
  • Founded 2017

Workspace security for Google and Microsoft 365 that assumes the mailbox will get owned and limits the blast.

Published original analysis of the May 2026 Composio Gmail OAuth token breach, June 2026

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

P

Picus Security

San Francisco, USA

  • Series C
  • Founded 2013

Breach-and-attack simulation plus autonomous pentest that scores whether controls actually stop the attack.

Raised $45M Series C to lead adversarial exposure validation, September 2024

S

SAFE

Palo Alto, USA

  • Series C
  • $170M raised
  • Founded 2012

Cyber risk quantification platform that added an agentic CTEM loop on top of CRQ and TPRM.

Raised $70M Series C and launched a fully autonomous CTEM offering, July 2025

Socket

San Francisco, USA

  • Series C
  • $125M raised
  • Founded 2022

Behavioral SCA that blocks malicious packages at install time, before a CVE exists.

Raised $60M Series C at a $1B valuation led by Thrive Capital, May 2026

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

Sublime Security

Washington, United States

  • Series C
  • $244M raised
  • Founded 2019

Agentic email security with open detection rules and AI that writes new coverage in hours.

Raised $150M Series C led by Georgian, October 2025

T

Teleport

Oakland, United States

  • Series C
  • $169M raised
  • Founded 2015

Infrastructure identity for SSH, Kubernetes, databases, and MCP servers without standing secrets.

Launched Beams trusted runtimes for AI agents, March 2026

Tines

Dublin, Ireland

  • Series C
  • $271M raised
  • Founded 2018

Workflow automation that security teams actually own, now with agentic AI on top.

Raised $125M Series C at a $1.13B valuation, February 2025

U

UpGuard

Hobart, Australia

  • Series C
  • Founded 2012

Cyber risk platform that started in vendor risk and now covers a company's own attack surface and workforce shadow AI use from one console.

Raised a $75M Series C led by Springcoast Partners, February 2026

W

Wallarm

San Francisco, United States

  • Series C
  • $75M raised
  • Founded 2013

Inline API and agent security that blocks abuse in real time instead of paging after the request lands.

Raised $55M Series C led by Toba Capital, July 2025

WorkOS

San Francisco, United States

  • Series C
  • Founded 2019

Enterprise identity APIs so product companies can ship SSO, SCIM, and audit without becoming an IAM vendor.

Raised $100M Series C at $2B valuation, March 2026

Z

Zafran

New York, USA

  • Series C
  • $130M raised
  • Founded 2022

CTEM that proves which CVEs are exploitable, then mitigates with the controls you already own.

Raised $60M Series C led by Menlo Ventures, December 2025

Zenity

New York, USA

  • Series C
  • $185M raised
  • Founded 2021

Agent security that watches the decision, not just the prompt, across SaaS, cloud, and endpoint.

Raised $125M Series C led by Norwest, August 2026