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Series B Cybersecurity companies in New York

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

Built from a search like: “Top Series B Cybersecurity companies in New York”

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

  1. 1
    AppViewX· New York, New York, United States
    • Series B
    • 557 employees
    • Founded 2008
  2. 2
    Adaptive Security· New York, New York, United States
    • Series B
    • 213 employees
    • Founded 2024
  3. 3
    CertiK· New York, New York, United States
    • Series B
    • 200 employees
    • Founded 2018
  4. 4
    OX Security· New York, New York, United States
    • Series B
    • 190 employees
    • Founded 2021
  5. 5
    Sentra· New York, New York, United States
    • Series B
    • 188 employees
    • Founded 2021
  6. 6
    Cycode· New York, New York, United States
    • Series B
    • 163 employees
    • Founded 2019
  7. 7
    Oasis Security· New York, New York, United States
    • Series B
    • 141 employees
    • Founded 2022
  8. 8
    Blockaid· New York, New York, United States
    • Series B
    • 134 employees
    • Founded 2022
  9. 9
    Apiiro· New York, New York, United States
    • Series B
    • 129 employees
    • Founded 2019
  10. 10
    Astrix Security· New York, New York, United States
    • Series B
    • 121 employees
    • Founded 2021
  11. 11
    Oligo Security· New York, New York, United States
    • Series B
    • 120 employees
    • Founded 2022
  12. 12
    Vicarius· New York, New York, United States
    • Series B
    • 111 employees
    • Founded 2016
  13. 13
    Noma Security· New York, New York, United States
    • Series B
    • 102 employees
    • Founded 2023
  14. 14
    Axio· New York, New York, United States
    • Series B
    • 94 employees
    • Founded 2016
  15. 15
    Mitiga· New York, New York, United States
    • Series B
    • 80 employees
    • Founded 2020
  16. 16
    Linx Security· New York, New York, United States
    • Series B
    • 75 employees
    • Founded 2023
  17. 17
    Illusive· New York, New York, United States
    • Series B
    • 70 employees
    • Founded 2014
  18. 18
    BforeAI | The PreCrimeTM Company· New York, New York, United States
    • Series B
    • 68 employees
    • Founded 2020
  19. 19
    DoControl· New York, New York, United States
    • Series B
    • 52 employees
    • Founded 2020
  20. 20
    nsKnox· New York, New York, United States
    • Series B
    • 48 employees
    • Founded 2016
  21. 21
    CyberMDX - A Forescout Company· New York, New York, United States
    • Series B
    • 9 employees
    • Founded 2016
  22. 22
    Barracuda SKOUT Managed XDR· New York, New York, United States
    • Series B
    • 9 employees
    • Founded 2013
  23. 23
    Indegy· New York, New York, United States
    • Series B
    • 6 employees
    • Founded 2014
  24. 24
    Unbound Security (acquired by Coinbase)· New York, New York, United States
    • Series B
    • 4 employees
    • Founded 2015

Find engineers at Series B Cybersecurity companies in New York

Searching for “engineers at top Series B 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 Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 24 matching companies in our 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 — Series B, 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 Series B Cybersecurity companies in New York hiring” or “founders of Series B 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 Series B 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: Thu, 07 May 2026 08:01:33 GMT

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