Company lists · Data refreshed September 2026
Top 24 Cybersecurity consulting services based in New York, United States
RevenueBase identified 328 cybersecurity consulting services headquartered in New York, United States as of September 2026 and tracks 4,735 professional contacts across them, including 1,682 with verified work emails. New York is the largest hub.
This list covers cybersecurity consulting services 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 21, 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.
The 24 largest cybersecurity consulting services based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 478 contacts → | ||||
Indirect evidence “XTIUM, created through the business combination of ATSG and Evolve IP, delivers a modern security-first approach to the managed IT services experience.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 311 contacts → | ||||
Indirect evidence “K2 Integrity is a global risk management company dedicated to helping organizations across both the public and private sectors protect their assets, reputation, and operations and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 268 contacts → | ||||
Indirect evidence “We stand at the forefront of leadership, insight, and guidance in a world marked by complexity and uncertainty.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 219 contacts → | ||||
Partial evidence “Kraft Kennedy is a multidisciplinary technology and management consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 206 contacts → | ||||
Indirect evidence “Stroz Friedberg is now LevelBlue, the world's largest pure-play Managed Security Services Provider (MSSP).” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 163 contacts → | ||||
Partial evidence “Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 80 contacts → | ||||
Indirect evidence “Cyber City inc.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 77 contacts → | ||||
Indirect evidence “TorchStone is a discreet risk mitigation and security advisory firm serving the unique needs of the world’s leading organizations and individuals.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 69 contacts → | ||||
Indirect evidence “HubSpire is an innovative team of management consultants, app developers, designers and digital transformation experts.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 66 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 65 contacts → | ||||
Partial evidence “RevelSI is a global cybersecurity, AI, software, and infrastructure services organization.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 58 contacts → | ||||
Partial evidence “Altourage is a New York City-based managed IT and cybersecurity provider built for organizations that operate in high-stakes, fast-moving environments.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 contacts → | ||||
Indirect evidence “Big Idea Technology manages IT for small businesses headquartered in the New York City metropolitan area.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 56 contacts → | ||||
Partial evidence “Rhymetec delivers premium cybersecurity and data privacy solutions for modern SaaS businesses, combining human expertise with innovative technology.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 54 contacts → | ||||
Strong evidence “White Wings Technologies is a forward-thinking IT solutions provider, specializing in cloud computing, cybersecurity, managed IT services, and strategic IT consulting.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 48 contacts → | ||||
Partial evidence “At Salus GRC, we offer more than just compliance and cybersecurity services – we provide a personalized commitment to your success.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 38 contacts → | ||||
Partial evidence “Fairdinkum is a leading full-service IT consulting firm located in mid-town.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 21, 2026Thanks. The Data Team will review it. | |||||
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 consulting services. 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 consulting services.
- Partial evidence
- Its own public description names part of cybersecurity consulting services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cybersecurity consulting services. 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 24 of 328 cybersecurity consulting services based in New York, United States
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Cybersecurity consulting services based in New York, United States at a glance
As of Sep 21, 2026Companies by employee count
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 328 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 consulting services, 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 consulting services”. 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 consulting services), 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 consulting services, 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, 1,682 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 21, 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 consulting services by metro in the United States
- Cybersecurity consulting services in New York328
- Cybersecurity consulting services in Houston204
- Cybersecurity consulting services in Washington202
- Cybersecurity consulting services in Atlanta192
- Cybersecurity consulting services in Austin171
- Cybersecurity consulting services in Dallas161
- Cybersecurity consulting services in Chicago154
- Cybersecurity consulting services in Miami147
- Cybersecurity consulting services in Tampa125
- Cybersecurity consulting services in San Francisco124
- Cybersecurity consulting services in San Diego107
- Cybersecurity consulting services in Los Angeles106
- Cybersecurity consulting services in Arlington98
- Cybersecurity consulting services in Denver93
- Cybersecurity consulting services in Boston86
- Cybersecurity consulting services in Charlotte82
- Cybersecurity consulting services in Alexandria78
- Cybersecurity consulting services in San Antonio78
- Cybersecurity consulting services in Columbia76
- Cybersecurity consulting services in Seattle76
- Cybersecurity consulting services in Reston74
- Cybersecurity consulting services in Phoenix72
- Cybersecurity consulting services in Las Vegas69
- Cybersecurity consulting services in Orlando66
- Cybersecurity consulting services in Portland59
- Cybersecurity consulting services in Raleigh57
- Cybersecurity consulting services in Huntsville52
- Cybersecurity consulting services in Mclean52
- Cybersecurity consulting services in Baltimore51
- Cybersecurity consulting services in Fairfax51
- Cybersecurity consulting services in Ashburn50
- Cybersecurity consulting services in Wilmington49
- Cybersecurity consulting services in Columbus48
- Cybersecurity consulting services in Plano48
- Cybersecurity consulting services in Richmond48
- Cybersecurity consulting services in San Jose48
- Cybersecurity consulting services in Sheridan47
- Cybersecurity consulting services in Irvine46
- Cybersecurity consulting services in Minneapolis46
- Cybersecurity consulting services in Fort Lauderdale44
- Cybersecurity consulting services in Pittsburgh42
- Cybersecurity consulting services in Colorado Springs41
- Cybersecurity consulting services in Frisco40
- Cybersecurity consulting services in Nashville40
- Cybersecurity consulting services in Scottsdale40
- Cybersecurity consulting services in Indianapolis39
- Cybersecurity consulting services in Herndon37
- Cybersecurity consulting services in Sacramento35
- Cybersecurity consulting services in Dover34
- Cybersecurity consulting services in Philadelphia34
- Cybersecurity consulting services in Alpharetta32
- Cybersecurity consulting services in Vienna32
- Cybersecurity consulting services in Jacksonville31
- Cybersecurity consulting services in Springfield31
- Cybersecurity consulting services in Chantilly30
- Cybersecurity consulting services in Rockville30
- Cybersecurity consulting services in Cleveland29
- Cybersecurity consulting services in Leesburg28
- Cybersecurity consulting services in Bethesda27
- Cybersecurity consulting services in Madison27
- Cybersecurity consulting services in Cincinnati26
- Cybersecurity consulting services in Honolulu26
- Cybersecurity consulting services in Knoxville26
- Cybersecurity consulting services in Omaha26
- Cybersecurity consulting services in Salt Lake City26
- Cybersecurity consulting services in Tucson26
- Cybersecurity consulting services in Albuquerque25
- Cybersecurity consulting services in Boca Raton25
- Cybersecurity consulting services in Newark25
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 consulting services, 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 consulting services are there based in New York, United States?
RevenueBase identified 328 cybersecurity consulting services 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?
XTIUM, headquartered in New York, tops this list with the largest team on record.
Which city has the most cybersecurity consulting services?
New York leads with 328 headquartered companies, followed by Houston (204) and Washington (202).
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 1,682 verified decision-maker contacts tracked across these 328 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 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 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.
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