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Seed Cyber Security Companies

Explore 1,154 cyber security startups that raised seed funding. Access verified founder contact information and fundraising data.

Total Companies
1,154
Total Funding
$140.8M
Avg Funding
$5.6M
Cities
22

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New York, United States
$500K
raised

Guild is an AI-native defense contractor automating aerospace manufacturing and supply-chain execution.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$7.3M
raised

HelmGuard develops an AI-driven trust infrastructure platform for security, compliance, and third-party risk management.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$500K
raised

Rational is an AI-powered accounting firm designed to automate accounting end-to-end.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Sheffield, United Kingdom
$6.8M
raised

SCI Semiconductor is developing and commercialising next generation, cyber-secure processor devices.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Morrisville, United States
$1.0M
raised

Archaius develops a patented field and phase technology to deliver Assured Positioning, Navigation, and Timing.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Philadelphia, United States
$200K
raised

Honeycake is a cybersecurity company that offers an AI proof file security platform.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Washougal, United States
$25.0M
raised

Resect AI catches enterprise AI hallucinations in real time. Operating in stream, its technology modifies model behavior to ensure accuracy.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Hürth, Germany
$1.2M
raised

Skylance develops close-range counter-drone defense systems and missile launch platforms.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Oakville, Canada
$200K
raised

AE SPACE is a deep-tech engineering company developing experimental navigation, propulsion, and energy systems based on quantum vacuum.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Talpa, United States
$10.3M
raised

Critical Materials Group provides advanced materials and manufacturing solutions for defense, aerospace, and national security.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Hanover, Germany
$23.2M
raised

INLEAP Photonics focused on ultra‑fast, solid‑state laser beam‑steering systems for industrial and defense‑related applications.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Washington, United States
$20.8M
raised

Aslan Protects combats digital threats by deploying AI technology to prevent future mass shootings and other security threats.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Berlin, Germany
$2.6M
raised

KAZIMI is a cybersecurity startup that helps app developers protect and verify their first-party data.

Aug 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$1.2M
raised

Verascient connects your tools, builds a context graph, and surfaces it to agents.

Aug 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Berkeley, United States
$6.0M
raised

Wireless Communication, Free Space Optics,

Aug 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Atlanta, United States

WitFoo is a project dedicated to operationalizing the craft of information security.

Aug 2026
Seed

Founder Contacts

41,000+ verified contacts

Palo Alto, United States
$11.0M
raised

Creating Embodied Superintelligence: AI Brain for Every Machine that Sees, Thinks, Acts & Evolves

Aug 2026
Seed

Founder Contacts

41,000+ verified contacts

Toronto, Canada
$5.0M
raised

Legio is a software development company that offers security operations, compliance and risk rolutions.

Aug 2026
Seed

Founder Contacts

41,000+ verified contacts

Saint-georges-d'esperanche, France
$3.1M
raised

AMDB Security Pro was developed as a dependable, strong, and easy-to-use solution to prevent theft of construction equipment.

Aug 2026
Seed

Founder Contacts

41,000+ verified contacts

Wayland, United States
$400K
raised

EmulateAI is a developer of AI cybersecurity platform finding, testing, prioritizing, and fixing exploitable software vulnerabilities.

Aug 2026
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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London, United Kingdom
$673K
raised

Safehire.ai provides AI-driven surface and dark web digital risk screening and background checks to support safer hiring and insider risk.

Aug 2026
Seed

Founder Contacts

41,000+ verified contacts

New York, United States
$8.0M
raised

The Behavioral Governance Layer for the Autonomous Workforce

Aug 2026
Seed

Founder Contacts

41,000+ verified contacts

Ottawa, Canada
$1.0M
raised

Woodway Assurance provides EviData, an AI-driven software for automated privacy assurance on de-identified and synthetic datasets.

Jul 2026
Seed

Founder Contacts

41,000+ verified contacts

Osaka, Japan
$3.4M
raised

Sinumy develops touchless identity authentication technology and high-speed, high-precision position measurement technology.

Jul 2026
Seed

Founder Contacts

41,000+ verified contacts

Charlotte, United States
$1.5M
raised

Cybersecurity company helping secure all 16 sectors of critical infrastructure from disruption

Jul 2026
Seed

Founder Contacts

41,000+ verified contacts

Showing 26 to 50 of 1,154 companies

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1,154 Cyber Security Seed Startups (November 2026) — Page 2 | VCBacked