Company lists · Data refreshed September 2026

Top 25 Cybersecurity businesses based in Santa Clara, United States

Name: Cybersecurity businesses based in Santa Clara, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 35 companies tracked

RevenueBase identified 35 cybersecurity businesses headquartered in Santa Clara, United States as of September 2026 and tracks 21,410 professional contacts across them, including 12,521 with verified work emails. New York is the largest hub.

This list covers cybersecurity businesses headquartered in Santa Clara, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

35Companies

21,410Contacts tracked

12,521Verified emails

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The 25 largest cybersecurity businesses based in Santa Clara, United States

Ranked by team size

Top 25 of 35 cybersecurity businesses based in Santa Clara, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity businesses: 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	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	10001+	18,431 contacts →
	Strong 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 21, 2026
2	Malwarebytes	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	501-1,000	604 contacts →
	Indirect evidence “Malwarebytes is reimagining security to safeguard devices, data, and people, no matter their location, lifestyle or means.” Source: RevenueBase Database · checked Sep 21, 2026
3	Seclore	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	201-500	497 contacts →
	Indirect evidence “Seclore is the Data Security Intelligence company for the era of enterprise AI, helping organizations turn data and AI risk into readiness.” Source: RevenueBase Database · checked Sep 21, 2026
4	Nsfocus	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	285 contacts →
	Indirect evidence “NSFOCUS is an iconic internet and application security company with over 20 years of proven industry experience.” Source: RevenueBase Database · checked Sep 21, 2026
5	Hillstone Networks	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	230 contacts →
	Indirect evidence “Hillstone Networks’ Integrative Cyber Security approach delivers coverage, control, and consolidation to secure digital transformation for more than enterprises worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
6	Hitachi Cyber	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	501-1,000	159 contacts →
	Indirect evidence “Hitachi Systems Trusted Cyber Management Inc.” Source: RevenueBase Database · checked Sep 21, 2026
7	Threatdown	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	501-1,000	106 contacts →
	Indirect evidence “ThreatDown is a standalone leader in elite Managed Detection and Response (MDR), purpose-built to empower resource-constrained security teams with high-efficacy protection…” Source: RevenueBase Database · checked Sep 21, 2026
8	Bacs Consulting Group, INC	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	11-50	106 contacts →
	Indirect evidence “BACS is an IT business services company.” Source: RevenueBase Database · checked Sep 21, 2026
9	Bolster AI	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	94 contacts →
	Strong evidence “Bolster is an AI-powered cybersecurity company helping the world’s leading brands protect their customers from phishing, fraud, and digital impersonation.” Source: RevenueBase Database · checked Sep 21, 2026
10	Acalvio Technologies	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	92 contacts →
	Indirect evidence “Acalvio, the leader in cyber deception technology, helps enterprises actively defend against advanced security threats.” Source: RevenueBase Database · checked Sep 21, 2026
11	ORDR	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	84 contacts →
	Indirect evidence “ORDR is the leader in AI-powered device security and asset protection, trusted by leading organizations in healthcare, transportation, manufacturing, and financial services.” Source: RevenueBase Database · checked Sep 21, 2026
12	Infortech	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	11-50	41 contacts →
	Indirect evidence “Infortech provides Managed IT Services and Tailored Cyber Security, Private and Hybrid Cloud Solutions.” Source: RevenueBase Database · checked Sep 21, 2026
13	Dataendure	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	38 contacts →
	Indirect evidence “DataEndure helps organizations build and sustain digital resilience-bringing a deep bench of expertise to every engagement across security, data, cloud, network, and…” Source: RevenueBase Database · checked Sep 21, 2026
14	Valyrian Systems INC	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	28 contacts →
	Indirect evidence “Valyrian System, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
15	Cybeready Security Awareness Training	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “CybeReady is the world’s only automated platform for cyber readiness training, delivering quick, real-world simulations and feedback to ensure your team is always prepared to…” Source: RevenueBase Database · checked Sep 21, 2026
16	Accelerite	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	201-500	22 contacts →
	Indirect evidence “Accelerite is a Silicon Valley based company delivering secure business-critical infrastructure software for Global enterprises.” Source: RevenueBase Database · checked Sep 21, 2026
17	Kenna Security	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	16 contacts →
	Indirect evidence “Kenna is now Cisco Vulnerability Management.” Source: RevenueBase Database · checked Sep 21, 2026
18	Cavirin Systems, INC	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	15 contacts →
	Indirect evidence “Cavirin protects your digital assets across the enterprise hybrid cloud by delivering CyberPosture Intelligence.” Source: RevenueBase Database · checked Sep 21, 2026
19	Yottasecure,inc	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	1-10	11 contacts →
	Strong evidence “Operational and non-operational systems in an enterprise often grapple with cybersecurity challenges, especially during vulnerability assessments in out-of-bandwidth scenarios.” Source: RevenueBase Database · checked Sep 21, 2026
20	Cyberforza	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	9 contacts →
	Strong evidence “Cyber Forza differentiates itself from other Cybersecurity providers by being the First and Only Cloud AI Unified Cyber Defense Platform.” Source: RevenueBase Database · checked Sep 21, 2026
21	Cyberhawks	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “Based in Silicon Valley, the certified experts at CyberHAWKS have been providing reliable IT solutions to diverse industries for over 30 years.” Source: RevenueBase Database · checked Sep 21, 2026
22	Allitcon INC	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	501-1,000	4 contacts →
	Indirect evidence “Allitcon is a new age technology company offering services and solutions to help better and secure your business.” Source: RevenueBase Database · checked Sep 21, 2026
23	Business Software Solutions	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence “For over 30 years Business Software Solutions has provided our outstanding Computer Network and Consulting Services to Small Businesses in the San Francisco Bay Area with 5-50…” Source: RevenueBase Database · checked Sep 21, 2026
24	Continuity Focus	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	11-50	2 contacts →
	Indirect evidence “Continuity Focus’ team of IT and Security architects and engineers work collaboratively with our clients to find the best way to implement and/or manage products from carefully…” Source: RevenueBase Database · checked Sep 21, 2026
25	Clarkconsultants	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	1-10	1 contacts →
	Indirect evidence “http://clarkconsultants.net VAR with Advisory Services.” Source: RevenueBase Database · checked Sep 21, 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 businesses. 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 businesses.
Partial evidence: Its own public description names part of cybersecurity businesses, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity businesses. 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 35 cybersecurity businesses based in Santa Clara, United States

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Cybersecurity businesses based in Santa Clara, United States at a glance

As of Sep 21, 2026

58.5%Verified-email coverage

611.7Average contacts per company

51-200Median size (employees)

1151.4%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than for Santa Clara, so it is reported there. Company counts and contact totals on this page are exact for Santa Clara, over 35 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 businesses, 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 Santa Clara, United States whose own description of what they do matches “cybersecurity businesses”. 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 businesses), 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 businesses, and records with no verified work email. Companies headquartered outside Santa Clara 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, 12,521 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 businesses 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 businesses, 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 businesses are there based in Santa Clara, United States?

RevenueBase identified 35 cybersecurity businesses headquartered in Santa Clara, 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 cybersecurity businesses?

New York leads with 403 headquartered companies, followed by Austin (207) and Washington (203).

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 12,521 verified decision-maker contacts tracked across these 35 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.