Company lists · Data refreshed September 2026

Top 25 Cyber security specialists based in the United States

Name: Cyber security specialists based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 3,367 companies tracked

RevenueBase identified 3,367 cyber security specialists headquartered in the United States as of September 2026 and tracks 85,427 professional contacts across them, including 42,234 with verified work emails. New York is the largest hub.

This list covers cyber security specialists headquartered in the 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 14, 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 14, 2026 86% judged on-target in blind review

3,367Companies

85,427Contacts tracked

42,234Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cyber security specialists based in the United States

Ranked by team size

Top 25 of 3,367 cyber security specialists based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to cyber security specialists: 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	Palo Alto Networks	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 14, 2026	10001+	18,431 contacts →
	Indirect evidence “Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.” Source: RevenueBase Database · checked Sep 14, 2026
2	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 14, 2026	10001+	14,289 contacts →
	Indirect evidence “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Source: RevenueBase Database · checked Sep 14, 2026
3	Trellix	Strong evidence	Plano, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,447 contacts →
	Strong evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 14, 2026
4	OPTIV	Partial evidence	Leawood, KS, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,222 contacts →
	Partial evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 14, 2026
5	Thales Cybersecurity Products	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,252 contacts →
	Indirect evidence “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: RevenueBase Database · checked Sep 14, 2026
6	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,232 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 14, 2026
7	Coalfire	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1,001-5,000	947 contacts →
	Indirect evidence “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Source: RevenueBase Database · checked Sep 14, 2026
8	Zerofox	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 14, 2026	501-1,000	904 contacts →
	Partial evidence “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Source: RevenueBase Database · checked Sep 14, 2026
9	Trustwave, A Levelblue Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	501-1,000	874 contacts →
	Partial evidence “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: RevenueBase Database · checked Sep 14, 2026
10	Cyderes	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 14, 2026	1,001-5,000	844 contacts →
	Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 14, 2026
11	Bluevoyant	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	683 contacts →
	Partial evidence “BlueVoyant’s Cyber Defense Platform (CDP) integrates MDR, TPRM, and DRP into a seamless, scalable solution.” Source: RevenueBase Database · checked Sep 14, 2026
12	Network Intelligence	Partial evidence	Plano, TX, United StatesHQ checked Sep 14, 2026	501-1,000	641 contacts →
	Partial evidence “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Source: RevenueBase Database · checked Sep 14, 2026
13	Vikingcloud	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1,001-5,000	628 contacts →
	Indirect evidence “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: RevenueBase Database · checked Sep 14, 2026
14	Ultraviolet Cyber	Strong evidence	Mclean, VA, United StatesHQ checked Sep 14, 2026	501-1,000	523 contacts →
	Strong evidence “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…” Source: RevenueBase Database · checked Sep 14, 2026
15	Aujas Cybersecurity	Indirect evidence	Cupertino, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	473 contacts →
	Indirect evidence “At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Source: RevenueBase Database · checked Sep 14, 2026
16	ARETE	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 14, 2026	201-500	462 contacts →
	Partial evidence “Arete helps organizations stay ahead of cyber threats with standardized, intelligence-led detection, response, resolution, and resilience capabilities.” Source: RevenueBase Database · checked Sep 14, 2026
17	RED Canary, A Zscaler Company	Partial evidence	Denver, CO, United StatesHQ checked Sep 14, 2026	201-500	408 contacts →
	Partial evidence “Red Canary stops cyber threats no one else does, so organizations can fearlessly pursue their missions.” Source: RevenueBase Database · checked Sep 14, 2026
18	Nozomi Networks	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	201-500	375 contacts →
	Partial evidence “We protect the world’s critical infrastructure from cyber threats.” Source: RevenueBase Database · checked Sep 14, 2026
19	Paladion An Atos Business	Indirect evidence	Reston, VA, United StatesHQ checked Sep 14, 2026	501-1,000	369 contacts →
	Indirect evidence “As of April 2023, Paladion is part of Atos Group.” Source: RevenueBase Database · checked Sep 14, 2026
20	IBN Technologies	Indirect evidence	Miami, FL, United StatesHQ checked Sep 14, 2026	51-200	365 contacts →
	Indirect evidence “Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…” Source: RevenueBase Database · checked Sep 14, 2026
21	Security Risk Advisors	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 14, 2026	201-500	315 contacts →
	Indirect evidence “We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Source: RevenueBase Database · checked Sep 14, 2026
22	Digitel Corporation	Indirect evidence	Johns Creek, GA, United StatesHQ checked Sep 14, 2026	51-200	305 contacts →
	Indirect evidence “ThreatAdvice is a leading provider of Cybersecurity solutions and Fraud Detection.” Source: RevenueBase Database · checked Sep 14, 2026
23	Logically	Indirect evidence	Dublin, OH, United StatesHQ checked Sep 14, 2026	201-500	300 contacts →
	Indirect evidence “Welcome to Logically.” Source: RevenueBase Database · checked Sep 14, 2026
24	Cipher A Prosegur Company	Indirect evidence	Miami, FL, United StatesHQ checked Sep 14, 2026	201-500	295 contacts →
	Indirect evidence “We are Cipher, a company from the Prosegur group specializing in Cybersecurity.” Source: RevenueBase Database · checked Sep 14, 2026
25	Baxter Clewis Cybersecurity	Indirect evidence	Cedar Hill, TX, United StatesHQ checked Sep 14, 2026	201-500	255 contacts →
	Indirect evidence “Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.” Source: RevenueBase Database · checked Sep 14, 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: cyber security specialists. 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 cyber security specialists.
Partial evidence: Its own public description names part of cyber security specialists, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cyber security specialists. 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 3,367 cyber security specialists based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 42,234 reachable decision-makers.

Free signup · no credit card

View the full list →

Cyber security specialists based in the United States at a glance

As of Sep 14, 2026

49.4%Verified-email coverage

25.4Average contacts per company

1-10Median size (employees)

2.9%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

1,892

11-50

1,039

51-200

324

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,367 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 cyber security specialists, 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 the United States whose own description of what they do matches “cyber security specialists”. 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 cyber security specialists), 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 cyber security specialists, and records with no verified work email. Companies headquartered outside United States 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, 42,234 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 14, 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.

Cyber security specialists by metro

Cyber security specialists in New York99
Cyber security specialists in Houston70
Cyber security specialists in Atlanta69
Cyber security specialists in Dallas63
Cyber security specialists in Miami61
Cyber security specialists in Austin60
Cyber security specialists in Washington58
Cyber security specialists in Chicago55
Cyber security specialists in Tampa45
Cyber security specialists in Los Angeles37
Cyber security specialists in San Francisco37
Cyber security specialists in Columbia36
Cyber security specialists in Boston34
Cyber security specialists in San Diego31
Cyber security specialists in Arlington30
Cyber security specialists in Charlotte30
Cyber security specialists in Baltimore29
Cyber security specialists in Denver29
Cyber security specialists in Las Vegas27
Cyber security specialists in Reston26
Cyber security specialists in Orlando25
Cyber security specialists in Phoenix25
Cyber security specialists in Sheridan25

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 cyber security specialists, 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 cyber security specialists are there based in the United States?

RevenueBase identified 3,367 cyber security specialists headquartered in the 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?

Palo Alto Networks, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most cyber security specialists?

New York leads with 99 headquartered companies, followed by Houston (70) and Atlanta (69).

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 42,234 verified decision-maker contacts tracked across these 3,367 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 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,367 cyber security specialists based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Cyber security specialists by geography

Browse the directory

Browse: Companies home · All United States lists · All Cyber security specialists lists · New lists

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.