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Seed Cybersecurity companies in New York

Companies defending or attacking software, networks, and cloud infrastructure. Filtered to Seed-stage companies headquartered in New York.

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Built from a search like: Top Seed Cybersecurity companies in New York

Ranked by current headcount across Seed Cybersecurity companies in New York. Refreshed daily.

  1. 1
    BreachLock, Inc.· New York, New York, United States

    BreachLock is a global leader in Continuous Attack Surface Discovery and Penetration Testing. Continuously discover, prioritize, and mitigate exposures with evidence-backed Attack Surface Management, Penetration Testing, and Red Teaming.Elevate your defense strategy with an attacker's view that goes beyond common vulnerabilities and exposures. Each risk we uncover is backed by validated evidence. We test your entire attack surface and help you mitigate your next cyber breach before it occurs.Know your risk. Contact BreachLock today!

    • Seed
    • 130 employees
    • Founded 2019
  2. 2
    Zepo Intelligence· New York, New York, United States

    The average cost of a data breach to your business can range from $120,000 to $1.24 million.You can't afford to be unprepared as cybersecurity threats to your organization become more sophisticated.We've advised many businesses and seen them struggle with cybersecurity, which is why we created Zepo Intelligence.Zepo is a simple and powerful cybersecurity tool that allows you to monitor your team's security status, simulate potential threats, and schedule training with just a few clicks.To learn more, go to www.zepo.ai

    • Seed
    • 76 employees
    • Founded 2021
  3. 3
    Dune Security· New York, New York, United States

    Dune Security prevents social engineering and insider threats across every channel.Dune is the software infrastructure for the User Layer; the missing, purpose-built layer that enables enterprises to measure, simulate, remediate, and enforce protection around users across any channel (email, voice, SMS, encrypted channels, collaboration tools, etc.). As Wiz became the platform for cloud security and Crowdstrike became the platform for endpoint security, Dune is the software infrastructure platform for the user security domain.Trusted by the Fortune 1000 and backed by $8M from Toba Capital, Craft Ventures, Mass Mutual Ventures, Alumni Ventures, Firestreak Ventures, and Antler, Dune Security empowers security teams to proactively manage user risk and build safer, more resilient organizations.

    • Seed
    • 73 employees
    • Founded 2023
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  5. 4
    Echo· New York, New York, United States

    Echo delivers a secure software supply chain for cloud-native teams, with vulnerability-free container images, libraries, OS packages, and more. Continuously vetted, patched, and hardened by purpose-built AI agents, Echo's artifacts replace risky public registries with a trusted source, so enterprise-grade security never comes at the cost of development speed.

    • Seed
    • 70 employees
    • Founded 2025
  6. 5
    OutThink· New York, New York, United States

    Move from traditional security awareness to high user engagement and adaptive security with the world’s leading AI Human Risk Management platform.Built by a team of visionary CISOs, security experts and researchers, OutThink protects enterprise organizations by putting humans at the heart of security operations.

    • Seed
    • 65 employees
    • Founded 2015

Find engineers at Seed Cybersecurity companies in New York

Searching for “engineers at top Seed Cybersecurity companies in New York” surfaces this slice of the market. The list above ranks Cybersecurity companies headquartered in New York whose latest disclosed round is Seed, by current headcount, drawn from public LinkedIn and Crunchbase records. With 35 matching companies in Refolk’s index, this is a tight read on where the Cybersecurity talent in New York is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Seed, Cybersecurity, in New York - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become Cybersecurity’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Seed Cybersecurity companies in New York hiring” or “founders of Seed Cybersecurity companies in New York who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.

How this list is built

Refolk pulled Cybersecurity companies headquartered in New York whose latest disclosed funding round is Seed from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 11:54:48 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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The underlying index updates continuously and this page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 11:54:48 GMT.

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