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Series A Cyber Security Companies

Explore 402 cyber security startups that raised series a funding. Access verified founder contact information and fundraising data.

Total Companies
402
Total Funding
$902.1M
Avg Funding
$36.1M
Cities
19

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San Francisco, United States
$45.0M
raised

Sable is a reliable partner that offers strict compliance, safe data processing, and no training on your data.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Berlin, Germany
$17.1M
raised

Project Q connects sensors, unmanned systems, command applications, and other operational technologies through an open-core platform.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$50.0M
raised

Valarian develops infrastructure and software for managing sensitive data, communications, and AI workloads in secure environments.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Abingdon, United Kingdom
$10.8M
raised

Luffy AI uses adaptive intelligence to evolve robotic control systems.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Ottawa, Canada
$97.6M
raised

Dominion Dynamics builds platforms that integrate sensor data and autonomous assets for real-time command and control.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Praha, Czech Republic
$7.8M
raised

Wultra provides banks and fintech companies with easy-to-deploy, post-quantum authentication that genuinely improves customer experience.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

Sunnyvale, United States
$64.0M
raised

Straiker is a software company that develops cybersecurity and AI applications via testing to identify threats and strengthen protection.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

Boston, United States
$25.0M
raised

AI-driven threat hunting platform.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

New York, United States
$30.0M
raised

Runlayer helps companies deploy, manage, and secure AI agents across their organizations.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

Santa Clara, United States
$190.0M
raised

Upscale AI redefines networking with purpose-built solutions for high-performance compute.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Paris, France
$36.8M
raised

Comand AI is a defense and security software developing AI-powered command solutions for defense operations.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$60.0M
raised

Arcade is an MCP runtime that helps AI Agents securely connect to APIs, data, and enterprise systems

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$25.0M
raised

Pi Security is an agentic AI-driven product security platform that enables organizations to automate security.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

Romainville, France
$57.6M
raised

Alta Ares is a data integration surveillance service provider that utilizes drone imaging.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

Paris, France
$15.0M
raised

MokN is a SaaS deception platform that captures stolen credentials and helps early detection of phishing attacks.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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London, United Kingdom
$30.0M
raised

Geordie AI is an AI governance platform, helping enterprises adopt AI agents while managing posture, observability, and compliance.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

Pittsburgh, United States
$40.0M
raised

Gray Swan AI is a cybersecurity company specializing in the safety and security of artificial intelligence systems.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$15.0M
raised

RevEng.ai is a deep AI framework for analysing binary computer programs.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

Mountain View, United States
$16.0M
raised

Lastwall is building new internet security systems, broadly based on new ways of authenticating users and strongly enforcing identity.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

Toronto, Canada
$8.0M
raised

Quantum Bridge builds a quantum-based that will transform the way the world creates, processes, exchanges, and secures data.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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New York, United States
$20.0M
raised

Ocean eliminates AI-powered targeted attacks that surface-level detections miss.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

Prague, Czech Republic
$5.0M
raised

FaceUp is a anonymous whistleblowing platform where employees or students can uncover the problems and challenges they are facing.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

Luzern, Switzerland
$15.2M
raised

Bug Bounty Switzerland operates a cybersecurity platform connecting organizations with ethical hackers to identify software vulnerabilities.

Apr 2026
Series A

Founder Contacts

41,000+ verified contacts

Frankfurt, Germany
$8.6M
raised

QuoIntelligence provides risk intelligence services that help organizations respond to cyber, geopolitical, and operational threats.

Apr 2026
Series A

Founder Contacts

41,000+ verified contacts

Cleveland, United States
$12.6M
raised

SCATR is the data camouflage company provides data security with Zero Trust Transit across any network.

Apr 2026
Series A

Founder Contacts

41,000+ verified contacts

Showing 26 to 50 of 402 companies

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