Company lists · Data refreshed September 2026

Top 25 Telecom cybersecurity software companies based in the United States

Name: Telecom cybersecurity 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 29, 2026 524 companies tracked

RevenueBase identified 524 telecom cybersecurity software companies headquartered in the United States as of September 2026 and tracks 50,470 professional contacts across them, including 27,535 with verified work emails. New York is the largest hub.

This list covers telecom cybersecurity 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 29, 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 29, 2026 86% judged on-target in blind review

524Companies

50,470Contacts tracked

27,535Verified emails

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The 25 largest telecom cybersecurity software companies based in the United States

Ranked by team size

Top 25 of 524 telecom cybersecurity software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to telecom cybersecurity 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	Palo Alto Networks	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 29, 2026	10001+	18,431 contacts →
	Partial 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 29, 2026
2	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 29, 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 29, 2026
3	Trellix	Partial evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,447 contacts →
	Partial 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 29, 2026
4	Barracuda	Partial evidence	Campbell, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,157 contacts →
	Partial evidence “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Source: RevenueBase Database · checked Sep 29, 2026
5	Imperva	Indirect evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	10001+	1,217 contacts →
	Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 29, 2026
6	Telos Corporation	Indirect evidence	Ashburn, VA, United StatesHQ checked Sep 29, 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 29, 2026
7	Novacoast	Strong evidence	Wichita, KS, United StatesHQ checked Sep 29, 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 29, 2026
8	US Claro	Partial evidence	Miramar, FL, United StatesHQ checked Sep 29, 2026	201-500	345 contacts →
	Partial evidence “Claro, a subsidiary of América Móvil, is a global integrator with over 20 years of experience and your partner for managing secure-by-design cybersecurity and information…” Source: RevenueBase Database · checked Sep 29, 2026
9	Digitel Corporation	Partial evidence	Johns Creek, GA, United StatesHQ checked Sep 29, 2026	51-200	305 contacts →
	Partial evidence “ThreatAdvice is a leading provider of Cybersecurity solutions and Fraud Detection.” Source: RevenueBase Database · checked Sep 29, 2026
10	Niksun	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 29, 2026	201-500	276 contacts →
	Indirect evidence “In the ever-growing world of Cloud Computing, Big Data and the Internet of Things, NIKSUN® is the industry leader in making the unknown known.” Source: RevenueBase Database · checked Sep 29, 2026
11	Cujo AI	Partial evidence	Covina, CA, United StatesHQ checked Sep 29, 2026	201-500	239 contacts →
	Partial evidence “CUJO AI® is the global leader of cutting-edge cybersecurity and network intelligence solutions that enable network operators globally to improve the digital life protection of…” Source: RevenueBase Database · checked Sep 29, 2026
12	Arkose Labs	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	201-500	219 contacts →
	Indirect evidence “Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…” Source: RevenueBase Database · checked Sep 29, 2026
13	Vehere	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	201-500	211 contacts →
	Indirect evidence “Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Source: RevenueBase Database · checked Sep 29, 2026
14	Openwave Systems	Partial evidence	Redwood City, United StatesHQ checked Sep 29, 2026	501-1,000	207 contacts →
	Partial evidence “Openwave Systems Inc.(Nasdaq: OPWV) was a global software innovator delivering context-aware mediation and messaging solutions that enable communication service providers and the…” Source: RevenueBase Database · checked Sep 29, 2026
15	Webroot	Indirect evidence	Broomfield, CO, United StatesHQ checked Sep 29, 2026	501-1,000	199 contacts →
	Indirect evidence “Webroot, an OpenText company, was the first to harness the cloud and artificial intelligence to stop zero-day threats in real time.” Source: RevenueBase Database · checked Sep 29, 2026
16	At&t Cybersecurity	Partial evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	156 contacts →
	Partial evidence “AT & T Cybersecurity’s Edge-to-Edge technologies provide phenomenal threat intelligence, collaborative defense, security without the seams, and solutions that fit your business.” Source: RevenueBase Database · checked Sep 29, 2026
17	Sealing Technologies, A Parsons Company	Partial evidence	Columbia, MD, United StatesHQ checked Sep 29, 2026	51-200	119 contacts →
	Partial evidence “SealingTech, a Parsons Company, rapidly delivers innovative, agile cybersecurity solutions that modernize, protect, and defend the networks and systems of the federal government…” Source: RevenueBase Database · checked Sep 29, 2026
18	Adapt Forward	Partial evidence	North Charleston, SC, United StatesHQ checked Sep 29, 2026	51-200	113 contacts →
	Partial evidence “Adapt Forward helps government agencies outpace adversaries through proven Cybersecurity Service Provider (CSSP) operations, mission-focused innovation, and a people first culture…” Source: RevenueBase Database · checked Sep 29, 2026
19	Illuminate Technologies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	110 contacts →
	Indirect evidence “Illuminate provides government agencies, commercial enterprises, and network operators with the data, services, and technology that helps them protect the information that…” Source: RevenueBase Database · checked Sep 29, 2026
20	Foresite Cybersecurity	Indirect evidence	Overland Park, KS, United StatesHQ checked Sep 29, 2026	51-200	101 contacts →
	Indirect evidence “As the world becomes more connected, our lives and businesses are more vulnerable.” Source: RevenueBase Database · checked Sep 29, 2026
21	Silveredge Government Solutions	Strong evidence	Columbia, MD, United StatesHQ checked Sep 29, 2026	201-500	88 contacts →
	Strong evidence “SilverEdge, An SAIC Company, is a next generation provider of innovative and proprietary cybersecurity, software, and intelligence solutions for the Defense and Intelligence…” Source: RevenueBase Database · checked Sep 29, 2026
22	Ipkeys Technologies	Partial evidence	Stafford, VA, United StatesHQ checked Sep 29, 2026	51-200	87 contacts →
	Partial evidence “IPKeys Technologies is a leading provider of cybersecurity products and services to the Department of Defense and other Federal Government Agencies.” Source: RevenueBase Database · checked Sep 29, 2026
23	Inversion6	Partial evidence	Westlake, OH, United StatesHQ checked Sep 29, 2026	51-200	74 contacts →
	Partial evidence “Inversion6, a division of TRG, is a comprehensive cybersecurity solutions provider that secures all areas of your enterprise by leveraging senior-level experts, proven processes…” Source: RevenueBase Database · checked Sep 29, 2026
24	IID	Indirect evidence	Tacoma, WA, United StatesHQ checked Sep 29, 2026	51-200	68 contacts →
	Indirect evidence “IID is an Infoblox company.” Source: RevenueBase Database · checked Sep 29, 2026
25	Bastille	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	51-200	66 contacts →
	Partial evidence “Bastille is the leader in Wireless Airspace Cybersecurity.” Source: RevenueBase Database · checked Sep 29, 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: telecom cybersecurity 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 telecom cybersecurity software companies.
Partial evidence: Its own public description names part of telecom cybersecurity software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom cybersecurity 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 524 telecom cybersecurity software companies based in the United States

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Telecom cybersecurity software companies based in the United States at a glance

As of Sep 29, 2026

54.6%Verified-email coverage

96.3Average contacts per company

11-50Median size (employees)

3.4%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

231

11-50

189

51-200

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 524 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 telecom cybersecurity 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 “telecom cybersecurity 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 telecom cybersecurity 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 telecom cybersecurity 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, 27,535 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 29, 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.

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 telecom cybersecurity 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 telecom cybersecurity software companies are there based in the United States?

RevenueBase identified 524 telecom cybersecurity 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?

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

Which city has the most telecom cybersecurity software companies?

New York leads with 18 headquartered companies, followed by Austin (9) and Miami (9).

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 27,535 verified decision-maker contacts tracked across these 524 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 29, 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.