Company lists · Data refreshed September 2026

Top 25 Cybersecurity professional development software companies based in the United States

Name: Cybersecurity professional development software companies 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 3,345 companies tracked

RevenueBase identified 3,345 cybersecurity professional development software companies headquartered in the United States as of September 2026 and tracks 79,150 professional contacts across them, including 28,917 with verified work emails. New York is the largest hub.

This list covers cybersecurity professional development software companies 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

3,345Companies

79,150Contacts tracked

28,917Verified emails

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

The 25 largest cybersecurity professional development software companies based in the United States

Ranked by team size

Top 25 of 3,345 cybersecurity professional development software companies 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 cybersecurity professional development software 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	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
2	Symantec	Partial evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	10001+	11,169 contacts →
	Partial evidence “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Source: RevenueBase Database · checked Sep 14, 2026
3	OPTIV	Indirect evidence	Leawood, KS, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,222 contacts →
	Indirect 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
4	Sans Institute	Partial evidence	Rockville, MD, United StatesHQ checked Sep 14, 2026	n/a	1,886 contacts →
	Partial evidence “SANS is the most trusted and by far the largest source for information and cybersecurity training and certification in the world.” Source: RevenueBase Database · checked Sep 14, 2026
5	Fortra	Partial evidence	Eden Prairie, MN, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,648 contacts →
	Partial evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Sep 14, 2026
6	Ec-Council	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,294 contacts →
	Indirect evidence “EC-Council is the creator of the globally renowned Certified Ethical Hacker (CEH) program.” Source: RevenueBase Database · checked Sep 14, 2026
7	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
8	Offsec	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	879 contacts →
	Partial evidence “Empowering the world to fight cyber threats with indispensable cybersecurity skills and resources.” 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	Application Specialist Kompany ASK	Indirect evidence	Lansing, MI, United StatesHQ checked Sep 14, 2026	n/a	785 contacts →
	Indirect evidence “ASK is now Convergence Networks!” Source: RevenueBase Database · checked Sep 14, 2026
12	Telos Corporation	Indirect evidence	Ashburn, VA, United StatesHQ checked Sep 14, 2026	501-1,000	629 contacts →
	Indirect evidence “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Source: RevenueBase Database · checked Sep 14, 2026
13	ACI Learning	Partial evidence	Colorado Springs, CO, United StatesHQ checked Sep 14, 2026	201-500	530 contacts →
	Partial evidence “ACI Learning trains the leaders in Audit, Cybersecurity, and Information Technology.” Source: RevenueBase Database · checked Sep 14, 2026
14	Ultraviolet Cyber	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 14, 2026	501-1,000	523 contacts →
	Indirect 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	Partial evidence	Cupertino, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	473 contacts →
	Partial 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	Novacoast	Strong evidence	Wichita, KS, United StatesHQ checked Sep 14, 2026	201-500	369 contacts →
	Strong evidence “Novacoast is an international cybersecurity company specializing in IT services and software development.” Source: RevenueBase Database · checked Sep 14, 2026
17	horizon3.ai	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	201-500	364 contacts →
	Partial evidence “Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Source: RevenueBase Database · checked Sep 14, 2026
18	Dark Wolf	Strong evidence	Herndon, VA, United StatesHQ checked Sep 14, 2026	501-1,000	348 contacts →
	Strong evidence “Dark Wolf provides DevSecOps agile software development, information operations, penetration testing and incident response, applied research and rapid prototyping, machine…” Source: RevenueBase Database · checked Sep 14, 2026
19	ONTIC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	201-500	317 contacts →
	Indirect evidence “At Ontic, you’ll join a team driven by collaboration, innovation, and a shared sense of purpose.” Source: RevenueBase Database · checked Sep 14, 2026
20	Security Risk Advisors	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 14, 2026	201-500	315 contacts →
	Partial 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
21	Cipher A Prosegur Company	Partial evidence	Miami, FL, United StatesHQ checked Sep 14, 2026	201-500	295 contacts →
	Partial evidence “We are Cipher, a company from the Prosegur group specializing in Cybersecurity.” Source: RevenueBase Database · checked Sep 14, 2026
22	Millennium Corporation	Partial evidence	Arlington, VA, United StatesHQ checked Sep 14, 2026	201-500	265 contacts →
	Partial evidence “For nearly two decades, Millennium Corporation has been operating on the leading edge of cybersecurity.” Source: RevenueBase Database · checked Sep 14, 2026
23	Baxter Clewis Cybersecurity	Partial evidence	Cedar Hill, TX, United StatesHQ checked Sep 14, 2026	201-500	255 contacts →
	Partial 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
24	Apriorit	Strong evidence	Lynn, MA, United StatesHQ checked Sep 14, 2026	201-500	249 contacts →
	Strong evidence “Apriorit is a full-cycle software development company that has been delivering cutting-edge IT solutions with security at the core since 2002.” Source: RevenueBase Database · checked Sep 14, 2026
25	Lumifi	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 14, 2026	51-200	249 contacts →
	Indirect evidence “Lumifi Cyber helps organizations illuminate their cyber defense with continuous protection across the full security lifecycle.” 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: cybersecurity professional development software companies. 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 professional development software companies.
Partial evidence: Its own public description names part of cybersecurity professional development software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity professional development software companies. 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 3,345 cybersecurity professional development software companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 28,917 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity professional development software companies based in the United States at a glance

As of Sep 14, 2026

36.5%Verified-email coverage

23.7Average 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

1,859

11-50

1,044

51-200

315

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 3,345 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 professional development software 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 the United States whose own description of what they do matches “cybersecurity professional development software 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 cybersecurity professional development software 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 cybersecurity professional development software companies, 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, 28,917 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.

Cybersecurity professional development software companies by metro

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 professional development software 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 cybersecurity professional development software companies are there based in the United States?

RevenueBase identified 3,345 cybersecurity professional development software companies 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?

Fortinet, headquartered in Sunnyvale, tops this list with the largest team on record.

Which city has the most cybersecurity professional development software companies?

New York leads with 98 headquartered companies, followed by Washington (72) and Dallas (60).

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 28,917 verified decision-maker contacts tracked across these 3,345 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 3,345 cybersecurity professional development software companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Cybersecurity professional development software companies by geography

Browse the directory

Browse: Companies home · All United States lists · All Cybersecurity professional development software companies 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.