Company lists · Data refreshed September 2026

Top 25 Cybersecurity contractors based in San Diego, United States

Name: Cybersecurity contractors based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 107 companies tracked

RevenueBase identified 107 company matches for cybersecurity contractors associated with San Diego, United States as of September 2026 and tracks 1,743 professional contacts across them, including 410 with verified work emails. Across the United States, New York is the largest hub for this category (293 companies); San Diego has 107.

This list covers company matches for cybersecurity contractors associated with San Diego, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built

107Companies

1,743Contacts tracked

410Verified emails

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The 25 largest cybersecurity contractors based in San Diego, United States

Ranked by team size

Top 25 of 107 company matches for cybersecurity contractors based in San Diego, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Indus Technology, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	402 contacts →
	Exact match “Inspired Employees.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Ausgar Technologies INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	148 contacts →
	Exact match “AUSGAR is a company of smart, innovative technical team members who can out-think problems faced by our customers in the cybersecurity, experimentation and engineering services…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Epsilon C5i	Exact match	San Diego, United StatesHQ recorded Sep 21, 2026	51-200	121 contacts →
	Exact match “Epsilon C5I, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Solute	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	108 contacts →
	Exact match “SOLUTE, a Sigma defense company, is headquartered in San Diego, California with a presence in many major military areas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Forward Slope, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	108 contacts →
	Exact match “Forward Slope is now part of Lyntris.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Sentek Global	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	81 contacts →
	Exact match “Sentek Global is the firm of choice for spearheading and supporting government and commercial IT programs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Triden Group	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	46 contacts →
	Exact match “Providing the Most Innovative and Intelligent Defense Available With the growth and evolution of cyber threats, cybersecurity has been thrust into the forefront of modern…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Infracore	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	40 contacts →
	Exact match “Infracore is a best-in-class Cybersecurity and IT Support Services firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Titanium Cobra Solutions	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	40 contacts →
	Exact match “Commissioned in 2010 to deliver quality project management support services, business information technology and C5I Systems Engineering solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	SIX Maritime	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	40 contacts →
	Exact match “Six Maritime is a service disabled, veteran-owned maritime security and training company specializing in advanced waterfront protection, autonomous systems integration, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	X-Feds	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	37 contacts →
	Exact match “X-Feds is a Small Business headquartered in San Diego, CA with satellite offices located in Norfolk, Virginia; Charleston, South Carolina; Crane, Indiana and Washington, DC.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Trustthink	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	27 contacts →
	Exact match “Founded in 2018, TrustThink provides cybersecurity engineering and system-of-systems assurance for complex, connected products and platforms.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Compuone	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	22 contacts →
	Exact match “We are now serving IT needs in the greater Chicago area!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Polyswarm	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	20 contacts →
	Exact match “PolySwarm is a crowdsourced threat intelligence marketplace that provides a more effective way to detect, analyze and respond to the latest threats, the ones more likely to go…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Taranet	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	1-10	14 contacts →
	Exact match “Cyber Security Risk Management Taranet provides SME support to identify, mitigate, and manage cyber security risks.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	IT Mentor Group, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	13 contacts →
	Exact match “IT Mentor Group, Inc.(ITMG) is located in San Diego, California and provides IT consulting, technical training, staffing, and contracting services around the globe.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Holocom, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	13 contacts →
	Exact match “Holocom is the leading solutions provider of Protective Distribution Systems (PDS) for classified networks such as SIPRNet, JWICS, and other networks transmitting highly sensitive…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Integrated Planet, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	12 contacts →
	Exact match “INTEGRATED PLANET INC is an information technology and services company based out of 10755 SCRIPPS POWAY PKWY, SAN DIEGO, California, United States.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Cybercatch	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	11 contacts →
	Exact match “CyberCatch provides an innovative cybersecurity Software-as-a-Service (SaaS) platform designed for SMBs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Accurate Security Pros, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	11 contacts →
	Exact match “Our locksmiths and security specialists enthusiastically serve our Customers throughout San Diego County and the Southern California Region.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Morado	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	10 contacts →
	Exact match “There is more cyber threat intelligence available today than ever before, but the challenge is knowing what is actionable and having the tools to act on it.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Tbdcyber	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	9 contacts →
	Exact match “TBDCyber is a cybersecurity company focused on strategy, assessments, and program build services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Trustfour Technologies	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	9 contacts →
	Exact match “TrustFour is a pioneer in workload and non-human identity security, providing innovative solutions for compliance, remediation, post quantum resiliency, and advanced threat…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	FSO Consultants	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	8 contacts →
	Exact match “FSO Consultants provides nationwide Facility Security consulting services for small businesses wishing to compete and perform on lucrative DoD related classified contracts.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Electro Specialty Systems	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	11-50	8 contacts →
	Exact match “Founded by brothers Dan and Bill Brault in 1987, Electro Specialty Systems is an electronic security integrator based in San Diego, California.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cybersecurity contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 107 cybersecurity contractors based in San Diego, United States

See the full list, filter by size, metro and specialty, and access 410 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity contractors based in San Diego, United States at a glance

As of Sep 21, 2026

23.5%Verified-email coverage

16.3Average contacts per company

1-10Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 107 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with San Diego, United States whose business descriptions match “cybersecurity contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 410 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity contractors by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity contractors are there based in San Diego, United States?

RevenueBase identified 107 company matches for cybersecurity contractors associated with San Diego, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Indus Technology, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most cybersecurity contractors?

New York leads the United States with 293 company records, followed by Washington (220) and Austin (170). San Diego has 107.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 410 professional contacts with verified work emails tracked across these 107 companies; direct dials are available where recorded.

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 SmartSearch, 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.