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Series A Cyber Security Companies

Explore 398 cyber security startups that raised series a funding. Access verified founder contact information and fundraising data.

Total Companies
398
Total Funding
$820.8M
Avg Funding
$32.8M
Cities
18

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Chandler, United States
$13.0M
raised

SynSaber is the vendor-agnostic asset & network monitoring software bringing edge visibility to critical infrastructure.

Aug 2022
Series A

Founder Contacts

41,000+ verified contacts

Palo Alto, United States
$5.0M
raised

HydroX AI is an AI-based security platform that provides one-stop solution for risk control and protecting sensitive data of large models.

Aug 2025
Series A

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$30.0M
raised

Mindgard is the leading provider of AI Red Teaming solutions.

Aug 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

Palo Alto, United States
$20.0M
raised

The smartest way to make risk decisions.

Jul 2021
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Sunnyvale, United States
$13.0M
raised

Discern Security helps organizations assess, prioritize, and remediate cybersecurity risks across enterprise environments.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

New York, United States
$20.0M
raised

Baselayer automates B2B risk assessment and eliminates fraud for over 1,900 Financial & Government Institutions.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Goleta, United States
$60.0M
raised

ChipAgents revolutionizes chip design and verification with Agentic AI, boosting RTL productivity 10x for smarter, faster innovation.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Dallas, United States
$20.0M
raised

SolCyber offers a curated stack of enterprise-strength security tools and streamlined, accessible, and affordable services.

Jul 2021
Series A

Founder Contacts

41,000+ verified contacts

Aveiro, Portugal
$11.5M
raised

Distributed cybersecurity ecosystem

Jul 2022
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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San Francisco, United States
$20.0M
raised

Lakera is a real-time GenAI security company that utilizes AI to protect enterprises from LLM vulnerabilities.

Jul 2024
Series A

Founder Contacts

41,000+ verified contacts

New York, United States
$36.0M
raised

Aegis AI is an email security platform that leverages AI agents to analyze emails like human analysts.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$25.0M
raised

Abstract Security provides data management solutions for security and compliance analytics.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Washington, United States
$160.0M
raised

Cathedral is an AI-powered military cybersecurity startup building offensive and defensive capabilities for national security operations.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Chicago, United States
$25.0M
raised

Empirical Security develops data-driven models to prioritize, analyze, and summarize cybersecurity vulnerabilities.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Boston, United States
$75.0M
raised

Neo Security is a cybersecurity company that develops an AI security platform for enterprises adopting agentic AI and AI-enabled software.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Miami, United States
$90.0M
raised

Halborn is a cybersecurity company protecting blockchain organizations from cyber attacks.

Jul 2022
Series A

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$13.0M
raised

Autonomous security testing for web apps, APIs, infrastructure, and AI systems.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

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

Dallas, United States
$30.0M
raised

iCOUNTER has developed an intelligence capability that is solely focused on thwarting specific attacks.

Jul 2025
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Warsaw, Poland
$6.7M
raised

Know Your Users™ to reject only fraudsters

Jul 2021
Series A

Founder Contacts

41,000+ verified contacts

Brussels, Belgium
$3.7M
raised

Kaspard is a non-intrusive system that in case of fall or too long bed exits provides real-time information to nurses in institutions.

Jul 2021
Series A

Founder Contacts

41,000+ verified contacts

Atlanta, United States
$21.0M
raised

SecurEnds is an information security company that helps to reduce security risk and costs by automating IGA.

Jul 2021
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

Showing 26 to 50 of 398 companies

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