Company lists · Data refreshed September 2026

Top 25 Cybersecurity services and solutions based in San Diego, United States

Name: Cybersecurity services and solutions 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 24, 2026 135 companies tracked

RevenueBase identified 135 cybersecurity services and solutions headquartered in San Diego, United States as of September 2026 and tracks 2,078 professional contacts across them, including 878 with verified work emails. Across the United States, New York is the largest hub for this category (457 companies); San Diego has 135.

This list covers cybersecurity services and solutions headquartered in San Diego, 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 24, 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 24, 2026 86% judged on-target in blind review

135Companies

2,078Contacts tracked

878Verified emails

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The 25 largest cybersecurity services and solutions based in San Diego, United States

Ranked by team size

Top 25 of 135 cybersecurity services and solutions based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity services and solutions: 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	Cybereason, A Levelblue Company	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	574 contacts →
	Partial evidence “Cybereason, a LevelBlue company, is a global cybersecurity leader delivering advanced endpoint detection and response (EDR) and industry recognized consulting services to support…” Source: RevenueBase Database · checked Sep 24, 2026
2	Ausgar Technologies INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	148 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
3	Epsilon C5i	Indirect evidence	San Diego, United StatesHQ checked Sep 24, 2026	51-200	121 contacts →
	Indirect evidence “Epsilon C5I, Inc.” Source: RevenueBase Database · checked Sep 24, 2026
4	Managed Solution	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	97 contacts →
	Partial evidence “Managed Solution was founded in 2002 and quickly earned recognition as one of San Diego’s 40 fastest-growing companies and the 27th fastest-growing IT company in Southern…” Source: RevenueBase Database · checked Sep 24, 2026
5	NTH Generation Computing	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	89 contacts →
	Partial evidence “Since 1991, Nth Generation has provided industry leading, consultative IT services, encompassing a suite of IT and security solutions.” Source: RevenueBase Database · checked Sep 24, 2026
6	Sentek Global	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	81 contacts →
	Indirect evidence “Sentek Global is the firm of choice for spearheading and supporting government and commercial IT programs.” Source: RevenueBase Database · checked Sep 24, 2026
7	Bird Rock Systems	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	56 contacts →
	Indirect evidence “Your organization requires IT to help it drive innovation, profitability, and security.” Source: RevenueBase Database · checked Sep 24, 2026
8	Blue Tech INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	55 contacts →
	Partial evidence “In business since 1984, Blue Tech is an IT solutions company dedicated to being responsive and thorough, upholding the highest standards of integrity in our relationships with…” Source: RevenueBase Database · checked Sep 24, 2026
9	Templar Shield	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	49 contacts →
	Indirect evidence “Templar Shield is a specialized risk, security, identity and AI governance advisory firm helping organizations operate with confidence in an increasingly automated, AI-driven…” Source: RevenueBase Database · checked Sep 24, 2026
10	Triden Group	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	46 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
11	Infracore	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	40 contacts →
	Partial evidence “Infracore is a best-in-class Cybersecurity and IT Support Services firm.” Source: RevenueBase Database · checked Sep 24, 2026
12	Titanium Cobra Solutions	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	40 contacts →
	Partial evidence “Commissioned in 2010 to deliver quality project management support services, business information technology and C5I Systems Engineering solutions.” Source: RevenueBase Database · checked Sep 24, 2026
13	Agile IT	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	39 contacts →
	Partial evidence “Our Mission To empower organizations with secure, compliant, and modern IT solutions that reduce risk, accelerate growth, and enable lasting innovation.” Source: RevenueBase Database · checked Sep 24, 2026
14	X-Feds	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	37 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 24, 2026
15	Trustthink	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	27 contacts →
	Partial evidence “Founded in 2018, TrustThink provides cybersecurity engineering and system-of-systems assurance for complex, connected products and platforms.” Source: RevenueBase Database · checked Sep 24, 2026
16	ISC Group, LLC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	23 contacts →
	Partial evidence “At ISC, we provide comprehensive IT solutions tailored to the diverse needs of modern businesses.” Source: RevenueBase Database · checked Sep 24, 2026
17	Compuone	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	22 contacts →
	Indirect evidence “We are now serving IT needs in the greater Chicago area!” Source: RevenueBase Database · checked Sep 24, 2026
18	Conde Group, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	20 contacts →
	Indirect evidence “Founded in 2003, Conde Group, Inc.” Source: RevenueBase Database · checked Sep 24, 2026
19	WY Technology	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	51-200	15 contacts →
	Partial evidence “WY Technology – Complete IT Solutions for Progressive Businesses Founded in WY Technology was created to help businesses leverage technology and find innovative solutions to the…” Source: RevenueBase Database · checked Sep 24, 2026
20	Taranet	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	1-10	14 contacts →
	Indirect evidence “Cyber Security Risk Management Taranet provides SME support to identify, mitigate, and manage cyber security risks.” Source: RevenueBase Database · checked Sep 24, 2026
21	IT Mentor Group, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	13 contacts →
	Indirect evidence “IT Mentor Group, Inc.(ITMG) is located in San Diego, California and provides IT consulting, technical training, staffing, and contracting services around the globe.” Source: RevenueBase Database · checked Sep 24, 2026
22	Gryphon Online Safety, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	13 contacts →
	Indirect evidence “San Diego startup that's revolutionizing home and small business network protection with AI powered cyber-security platform.” Source: RevenueBase Database · checked Sep 24, 2026
23	Holocom, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	13 contacts →
	Partial evidence “Holocom is the leading solutions provider of Protective Distribution Systems (PDS) for classified networks such as SIPRNet, JWICS, and other networks transmitting highly sensitive…” Source: RevenueBase Database · checked Sep 24, 2026
24	Integrated Planet, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	12 contacts →
	Indirect evidence “INTEGRATED PLANET INC is an information technology and services company based out of 10755 SCRIPPS POWAY PKWY, SAN DIEGO, California, United States.” Source: RevenueBase Database · checked Sep 24, 2026
25	Cybercatch	Partial evidence	San Diego, CA, United StatesHQ checked Sep 24, 2026	11-50	11 contacts →
	Partial evidence “CyberCatch provides an innovative cybersecurity Software-as-a-Service (SaaS) platform designed for SMBs.” Source: RevenueBase Database · checked Sep 24, 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 services and solutions. 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 services and solutions.
Partial evidence: Its own public description names part of cybersecurity services and solutions, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity services and solutions. 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 135 cybersecurity services and solutions based in San Diego, United States

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Cybersecurity services and solutions based in San Diego, United States at a glance

As of Sep 24, 2026

42.3%Verified-email coverage

15.4Average contacts per company

1-10Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 135 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 services and solutions, 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 San Diego, United States whose own description of what they do matches “cybersecurity services and solutions”. 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 services and solutions), 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 services and solutions, and records with no verified work email. Companies headquartered outside San Diego 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, 878 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 24, 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 services and solutions 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 services and solutions, 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 services and solutions are there based in San Diego, United States?

RevenueBase identified 135 cybersecurity services and solutions headquartered in San Diego, 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?

Cybereason, A Levelblue Company, headquartered in San Diego, tops this list with the largest team on record.

Which city in the United States has the most cybersecurity services and solutions?

New York leads the United States with 457 headquartered companies, followed by Houston (271) and Washington (235). San Diego has 135.

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 878 verified decision-maker contacts tracked across these 135 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 24, 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.