Company lists · Data refreshed September 2026

Top 25 Appsec companies based in New York, United States

RevenueBase identified 123 company matches for appsec companies associated with New York, United States as of September 2026 and tracks 3,072 professional contacts across them, including 1,017 with verified work emails. Across the United States, San Francisco is the largest hub for this category (145 companies); New York follows with 123.

This list covers company matches for appsec companies associated with New York, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
123Companies
3,072Contacts tracked
1,017Verified emails
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The 25 largest appsec companies based in New York, United States

Ranked by team size
Top 25 of 123 company matches for appsec companies based in New York, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNew York, NY, United StatesHQ recorded Sep 21, 2026501-1,000535 contacts →

Exact match

“Funded by world-class investors, including Evolution Equity Partners, Silver Lake Partners, Sequoia Capital, GV, Riverwood Capital, and others, SecurityScorecard is the global…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Sep 21, 2026201-500190 contacts →

Exact match

“CertiK is the largest Web3 security services provider, founded in December 2017 in New York by two professors from Yale and Columbia University.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200168 contacts →

Exact match

“OX Security removes risk at the source - eliminating exposures from AI code generation through cloud runtime - preventing security debt before it ever reaches production.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200139 contacts →

Exact match

“Zafran is an AI-native exposure management platform that eliminates the manual toil of vulnerability management by cutting through noise, revealing what is truly exploitable, and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200134 contacts →

Exact match

“BreachLock is a global leader in Continuous Attack Surface Discovery and Penetration Testing.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200117 contacts →

Exact match

“Apiiro Guardian Agent secures agentic development with the context and memory layer provided by the AppSec Data Fabric.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200117 contacts →

Exact match

“Panorays is a leading provider of third-party cyber risk management solutions, helping businesses optimize their defenses for each unique third-party relationship.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200105 contacts →

Exact match

“Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20094 contacts →

Exact match

“Since 2012, Trail of Bits has been the premier place for security experts to boldly advance security and address technology’s newest and most challenging risks.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20076 contacts →

Exact match

“NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202611-5065 contacts →

Exact match

“Orchid delivers an identity-first security orchestration platform.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchNew York, United StatesHQ recorded Sep 21, 202611-5060 contacts →

Exact match

“Seal Security’s AppSec Remediation Agent delivers real, human-vetted, production-ready fixes for open source vulnerabilities - resolving risk directly in your applications without…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202611-5057 contacts →

Exact match

“nsKnox is a cybersecurity company focused on Corporate Payment Security, founded and led by Alon Cohen, Founder & former CEO of CyberArk (NASDAQ: CYBR).”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20057 contacts →

Exact match

“DoControl is a SaaS Security Posture Management (SSPM) solution offering visibility, threat detection, and remediation for sensitive data exposure and insider threats.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202611-5056 contacts →

Exact match

“Rhymetec delivers premium cybersecurity and data privacy solutions for modern SaaS businesses, combining human expertise with innovative technology.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20053 contacts →

Exact match

“Dune Security prevents social engineering and insider threats across every channel.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20046 contacts →

Exact match

“Valence protects organizations from threats created by SaaS and AI sprawl.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20038 contacts →

Exact match

“Reveald is making Exposure Management a reality to solve the biggest challenges in cybersecurity with a trailblazing ‘offense to defense’ approach that gives the advantage back to…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202611-5038 contacts →

Exact match

“We're the security consultants Fortune 500s call when they're in real trouble, the ones who find what others miss, who speak CEO and CISO fluently.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20034 contacts →

Exact match

“Established in 2001, Zecurion has emerged as a worldwide authority in IT security solutions, safeguarding the interests of more than corporate clients spanning across 70+…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20033 contacts →

Exact match

“Vulnerability assessment scanners are adept at finding security flaws, but they leave professionals with chaotic lists of vulnerabilities to sift through.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchNew York, United StatesHQ recorded Sep 21, 202611-5031 contacts →

Exact match

“Established in 2001 CalCom positioned itself as a leading provider of unique hardening automation tools that address both the needs of IT and Security teams.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202611-5029 contacts →

Exact match

“Red Balloon Security is a leading security provider and research firm committed to defending embedded devices across a range of critical industries and shaping the future of the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-20023 contacts →

Exact match

“Illusive was acquired by Proofpoint.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202611-5022 contacts →

Exact match

“In today’s world - everything we do revolves around the browser.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 123 appsec companies based in New York, United States

See the full list, filter by size, metro and specialty, and access 1,017 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Appsec companies based in New York, United States at a glance

As of Sep 21, 2026
33.1%Verified-email coverage
25.0Average contacts per company
11-50Median size (employees)
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
52
11-50
43
51-200
21
201-500
4
501-1,000
1
1,001-5,000
2

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 123 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with New York, United States whose business descriptions match “appsec companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,017 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “appsec companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many appsec companies are there based in New York, United States?

RevenueBase identified 123 company matches for appsec companies associated with New York, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Securityscorecard tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most appsec companies?

San Francisco leads the United States with 145 company records, followed by New York (123) and Austin (93).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,017 professional contacts with verified work emails tracked across these 123 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.