Company lists · Data refreshed September 2026

Top 25 Cybersecurity assessment firms based in New York, United States

Name: Cybersecurity assessment firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 161 companies tracked

RevenueBase identified 161 cybersecurity assessment firms headquartered in New York, United States as of September 2026 and tracks 2,830 professional contacts across them, including 892 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers cybersecurity assessment firms 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 28, 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 28, 2026 86% judged on-target in blind review

161Companies

2,830Contacts tracked

892Verified emails

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The 25 largest cybersecurity assessment firms based in New York, United States

Ranked by team size

Top 25 of 161 cybersecurity assessment firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity assessment firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Securityscorecard	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	535 contacts →
	Indirect evidence “Funded by world-class investors, including Evolution Equity Partners, Silver Lake Partners, Sequoia Capital, GV, Riverwood Capital, and others, SecurityScorecard is the global…” Source: RevenueBase Database · checked Sep 28, 2026
2	Thoropass	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	243 contacts →
	Partial evidence “Thoropass is the only end-to-end cybersecurity auditor.” Source: RevenueBase Database · checked Sep 28, 2026
3	AGIO	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	200 contacts →
	Partial evidence “Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…” Source: RevenueBase Database · checked Sep 28, 2026
4	Breachlock, INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	134 contacts →
	Indirect evidence “BreachLock is a global leader in Continuous Attack Surface Discovery and Penetration Testing.” Source: RevenueBase Database · checked Sep 28, 2026
5	Cyberrisk Alliance	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	119 contacts →
	Partial evidence “CyberRisk Alliance (CRA) was formed to help cybersecurity professionals face the challenges and obstacles that threaten the success and prosperity of their organizations.” Source: RevenueBase Database · checked Sep 28, 2026
6	Panorays	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	117 contacts →
	Indirect evidence “Panorays is a leading provider of third-party cyber risk management solutions, helping businesses optimize their defenses for each unique third-party relationship.” Source: RevenueBase Database · checked Sep 28, 2026
7	Nopalcyber	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	76 contacts →
	Partial evidence “NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.” Source: RevenueBase Database · checked Sep 28, 2026
8	Eretmis INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	n/a	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
9	Revelsi	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “RevelSI is a global cybersecurity, AI, software, and infrastructure services organization.” Source: RevenueBase Database · checked Sep 28, 2026
10	Nsknox	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	57 contacts →
	Partial evidence “nsKnox is a cybersecurity company focused on Corporate Payment Security, founded and led by Alon Cohen, Founder & former CEO of CyberArk (NASDAQ: CYBR).” Source: RevenueBase Database · checked Sep 28, 2026
11	Port53	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	55 contacts →
	Indirect evidence “Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Source: RevenueBase Database · checked Sep 28, 2026
12	Proven Data	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “Founded in 2011, Proven Data has consistently evolved to meet the growing needs of our clients.” Source: RevenueBase Database · checked Sep 28, 2026
13	OSEC	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
14	Vista Infosec	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	32 contacts →
	Indirect evidence “VISTA InfoSec is a vendor-neutral company providing Risk Compliance and Information Security Advisory Services to organizations for the past 20 years (established in 2004).” Source: RevenueBase Database · checked Sep 28, 2026
15	Ciphertechs A Cybermaxx Company	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	51-200	28 contacts →
	Partial evidence “CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.” Source: RevenueBase Database · checked Sep 28, 2026
16	TAG Infosphere	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “TAG serves the cybersecurity community, primarily with enterprise, vendors, and venture capital.” Source: RevenueBase Database · checked Sep 28, 2026
17	Gotham Digital Science, A Stroz Friedberg Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect evidence “Gotham Digital Science (GDS) was acquired in 2016 by Stroz Friedberg, an Aon company.” Source: RevenueBase Database · checked Sep 28, 2026
18	ACA Aponix	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	19 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 28, 2026
19	Rescana	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Rescana is redefining third-party cyber risk management.” Source: RevenueBase Database · checked Sep 28, 2026
20	Unit 221b	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Unit 221B is a threat disruption company delivering actionable threat intelligence and cybersecurity solutions that enable enterprises, law enforcement, and government agencies to…” Source: RevenueBase Database · checked Sep 28, 2026
21	Lifars, LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “LIFARS, a SecurityScorecard Company is a global leader in Incident Response, Digital Forensics, Ransomware Mitigation, and Cyber Resiliency services.” Source: RevenueBase Database · checked Sep 28, 2026
22	Cyberconvoy	Indirect evidence	New York, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.” Source: RevenueBase Database · checked Sep 28, 2026
23	Pensarai	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Pensar equips security teams with AI-powered tools to defend their identity and access perimeter.” Source: RevenueBase Database · checked Sep 28, 2026
24	Silent Breach	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “At Silent Breach, we think like a hacker and defend like a pro.” Source: RevenueBase Database · checked Sep 28, 2026
25	RGS Global Advisors	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “Top notch services at reasonable cost RGS Global Advisors has a wealth of internal audit, FDICIA and SOX testing, remediation, consultancy, BSA/AML/OFAC, IT/IS/Cybersecurity &…” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cybersecurity assessment firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cybersecurity assessment firms.
Partial evidence: Its own public description names part of cybersecurity assessment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity assessment firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 161 cybersecurity assessment firms based in New York, United States

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Cybersecurity assessment firms based in New York, United States at a glance

As of Sep 28, 2026

31.5%Verified-email coverage

17.6Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 161 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 cybersecurity assessment firms, 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 “cybersecurity assessment firms”. 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 cybersecurity assessment firms), 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 cybersecurity assessment firms, 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, 892 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 28, 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.

Cybersecurity assessment firms 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 cybersecurity assessment firms, 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 cybersecurity assessment firms are there based in New York, United States?

RevenueBase identified 161 cybersecurity assessment firms 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?

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

Which city in the United States has the most cybersecurity assessment firms?

New York leads the United States with 161 headquartered companies, followed by Atlanta (118) and Washington (115).

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 892 verified decision-maker contacts tracked across these 161 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 28, 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.