Company lists · Data refreshed September 2026

Top 18 Software vulnerability assessment companies based in New York, United States

RevenueBase identified 47 software vulnerability assessment companies headquartered in New York, United States as of September 2026 and tracks 857 professional contacts across them, including 409 with verified work emails. San Francisco is the largest hub.

This list covers software vulnerability assessment companies headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
47Companies
857Contacts tracked
409Verified emails
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The 18 largest software vulnerability assessment companies based in New York, United States

Ranked by team size
Top 18 of 47 software vulnerability assessment companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software vulnerability assessment companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 6, 202651-200139 contacts →

“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…”

Source: company website · checked Sep 6, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 202651-200134 contacts →

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

Source: company website · checked Sep 6, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 202611-5038 contacts →

“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.”

Source: company website · checked Sep 6, 2026
4Strong evidenceNew York, NY, United StatesHQ checked Sep 6, 202651-20033 contacts →

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

Source: company website · checked Sep 6, 2026
5Indirect evidenceNew York, United StatesHQ checked Sep 6, 202651-20028 contacts →

“CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.”

Source: company website · checked Sep 6, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 202651-20021 contacts →

“Gotham Digital Science (GDS) was acquired in 2016 by Stroz Friedberg, an Aon company.”

Source: company website · checked Sep 6, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 6, 2026201-50019 contacts →

“ACA Aponix, a division of ACA Group, provides cybersecurity and technology risk assessments, vendor and M&A diligence services, network testing, and advisory services.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 20261-1012 contacts →

“Pensar equips security teams with AI-powered tools to defend their identity and access perimeter.”

Source: company website · checked Sep 6, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 202611-5012 contacts →

“At Silent Breach, we think like a hacker and defend like a pro.”

Source: company website · checked Sep 6, 2026
10Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 20261-109 contacts →

“Our primary business is the digital security of your assets.”

Source: company website · checked Sep 6, 2026
11Indirect evidenceNew York, United StatesHQ checked Sep 6, 202611-508 contacts →

“Sayfer, where people and technology meet to overcome web3 and blockchain challenges.”

Source: company website · checked Sep 6, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 202611-504 contacts →

“Hacker Simulations delivers advanced penetration testing and offensive security services for organizations that require real assurance, not checkbox security.”

Source: company website · checked Sep 6, 2026
13Indirect evidenceNew York, United StatesHQ checked Sep 6, 202611-504 contacts →

“Velstadt is a cybersecurity provider focused on delivering both offensive and defensive security services.”

Source: company website · checked Sep 6, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 20261-104 contacts →

“Bytium LLC is a U.S-registered cybersecurity and IT solutions firm dedicated to helping organizations protect their information assets and maintain operational resilience.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 20261-103 contacts →

“BrothersKeep is a boutique cybersecurity services firm with offices in New York and Israel, providing a full portfolio of enterprise-class cybersecurity solutions to businesses of…”

Source: company website · checked Sep 6, 2026
16Indirect evidenceNew York, United StatesHQ checked Sep 6, 20261-101 contacts →

“BTblock is a technology and cybersecurity consultancy specialized in providing end-to-end security and auditing solutions, with a focus on servicing clients in the blockchain &…”

Source: company website · checked Sep 6, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 6, 20261-101 contacts →
Source: company website · checked Sep 6, 2026
18Indirect evidenceNew York, United StatesHQ checked Sep 6, 20261-101 contacts →
Source: company website · checked Sep 6, 2026

Showing 18 of 47 software vulnerability assessment companies based in New York, United States

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Software vulnerability assessment companies based in New York, United States at a glance

As of Sep 6, 2026
47.7%Verified-email coverage
18.2Average contacts per company
11-50Median size (employees)
108.5%Largest-city concentration · San Francisco
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
13
51-200
7
201-500
3
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 47 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among software vulnerability assessment companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in New York, United States whose own description of what they do matches “software vulnerability assessment companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names software vulnerability assessment companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among software vulnerability assessment companies, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 409 across the full list. 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 6, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Software vulnerability assessment companies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names software vulnerability assessment companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many software vulnerability assessment companies are there based in New York, United States?

RevenueBase identified 47 software vulnerability assessment companies headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Zafran Security, headquartered in New York, tops this list with the largest team on record.

Which city has the most software vulnerability assessment companies?

San Francisco leads with 51 headquartered companies, followed by New York (47) and Austin (30).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 409 verified decision-maker contacts tracked across these 47 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 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 Smart Search, 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.