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Top Cybersecurity companies in New York

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

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

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

  1. 1
    Wiz· New York, New York, United States
    • Series unknown
    • 3.3k employees
    • Founded 2020
  2. 2
    MS Office· New York, New York, United States
    • 1.5k employees
    • Founded 2000
  3. 3
    Cyera· New York, New York, United States
    • Series F
    • 1.3k employees
    • Founded 2021
  4. 4
    OffSec· New York, New York, United States
    • Private equity
    • 1.1k employees
    • Founded 2006
  5. 5
    Claroty· New York, New York, United States
    • Series F
    • 829 employees
    • Founded 2015
  6. 6
    Axonius· New York, New York, United States
    • Series E
    • 770 employees
    • Founded 2017
  7. 7
    BigID· New York, New York, United States
    • Series E
    • 676 employees
    • Founded 2016
  8. 8
    BlueVoyant· New York, New York, United States
    • Series E
    • 646 employees
    • Founded 2017
  9. 9
    DOT FAA· Westbury, New York, United States
    • 602 employees
  10. 10
    AppViewX· New York, New York, United States
    • Series B
    • 557 employees
    • Founded 2008
  11. 11
    HUMAN· New York, New York, United States
    • Series unknown
    • 519 employees
    • Founded 2012
  12. 12
    Center for Internet Security· East Greenbush, New York, United States
    • 498 employees
    • Founded 2000
  13. 13
    BioCatch· New York, New York, United States
    • Secondary
    • 455 employees
    • Founded 2011
  14. 14
    Torq· New York, New York, United States
    • Series D
    • 420 employees
    • Founded 2020
  15. 15
    Dashlane· New York, New York, United States
    • Series D
    • 302 employees
    • Founded 2009
  16. 16
    Resilience· New York, New York, United States
    • Series D
    • 286 employees
    • Founded 2016
  17. 17
    CHEQ· New York, New York, United States
    • Series C
    • 254 employees
    • Founded 2016
  18. 18
    Cymulate· New York, New York, United States
    • Series D
    • 251 employees
    • Founded 2016
  19. 19
    Filigran· New York, New York, United States
    • Series C
    • 221 employees
    • Founded 2022
  20. 20
    Adaptive Security· New York, New York, United States
    • Series B
    • 213 employees
    • Founded 2024
  21. 21
    DataDome· New York, New York, United States
    • Series C
    • 209 employees
    • Founded 2015
  22. 22
    CertiK· New York, New York, United States
    • Series B
    • 200 employees
    • Founded 2018
  23. 23
    OX Security· New York, New York, United States
    • Series B
    • 190 employees
    • Founded 2021
  24. 24
    Sentra· New York, New York, United States
    • Series B
    • 188 employees
    • Founded 2021
  25. 25
    Deep Instinct· New York, New York, United States
    • Series unknown
    • 172 employees
    • Founded 2015

Find engineers at Cybersecurity companies in New York

New York has long been a hub for Cybersecurity, and the list above ranks the largest Cybersecurity companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 241 matching companies in our index, this is a good map of where the Cybersecurity talent in New Yorklives — useful whether you’re recruiting, partnering, or sizing a market.

The biggest Cybersecurity companies in New York tend to be the gravitational centres for specialised talent — senior engineers, ML researchers, applied scientists, designers — while the smaller ones compete on speed, equity, and proximity to founders.

Refolk converts this list into a live search. Ask for “Cybersecurity engineers in New Yorkhiring senior staff” or “founders of Cybersecurity companies in New Yorkwho left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.

How this list is built

Refolk pulled Cybersecurity companies headquartered in New York from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 10 employees. The list refreshes once a day.

Last refreshed: Sat, 09 May 2026 09:45:22 GMT

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