Company lists · Data refreshed September 2026

Top 25 Cybersecurity platforms based in San Diego, United States

Name: Cybersecurity platforms 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 28, 2026 96 companies tracked

RevenueBase identified 96 cybersecurity platforms headquartered in San Diego, United States as of September 2026 and tracks 1,267 professional contacts across them, including 579 with verified work emails. Across the United States, New York is the largest hub for this category (383 companies); San Diego has 96.

This list covers cybersecurity platforms 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 28, 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 28, 2026 86% judged on-target in blind review

96Companies

1,267Contacts tracked

579Verified emails

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

Ranked by team size

Top 25 of 96 cybersecurity platforms based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity platforms: 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 28, 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 28, 2026
2	Forward Slope, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	108 contacts →
	Indirect evidence “Forward Slope is now part of Lyntris.” Source: RevenueBase Database · checked Sep 28, 2026
3	Templar Shield	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 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 28, 2026
4	Triden Group	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 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 28, 2026
5	Infracore	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	40 contacts →
	Partial evidence “Infracore is a best-in-class Cybersecurity and IT Support Services firm.” Source: RevenueBase Database · checked Sep 28, 2026
6	Trustthink	Strong evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	27 contacts →
	Strong evidence “Founded in 2018, TrustThink provides cybersecurity engineering and system-of-systems assurance for complex, connected products and platforms.” Source: RevenueBase Database · checked Sep 28, 2026
7	Compuone	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “We are now serving IT needs in the greater Chicago area!” Source: RevenueBase Database · checked Sep 28, 2026
8	Polyswarm	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	20 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
9	Ubiq Security	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	16 contacts →
	Partial evidence “Ubiq is an identity-driven data security platform that helps enterprises protect and control sensitive data across applications, databases, analytics, AI workflows, data…” Source: RevenueBase Database · checked Sep 28, 2026
10	Garantir Cybersecurity	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Garantir is a cybersecurity company that provides advanced cryptographic solutions to the enterprise.” Source: RevenueBase Database · checked Sep 28, 2026
11	Taranet	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 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 28, 2026
12	Gryphon Online Safety, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “San Diego startup that's revolutionizing home and small business network protection with AI powered cyber-security platform.” Source: RevenueBase Database · checked Sep 28, 2026
13	Holocom, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect 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 28, 2026
14	Cybercatch	Strong evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Strong evidence “CyberCatch provides an innovative cybersecurity Software-as-a-Service (SaaS) platform designed for SMBs.” Source: RevenueBase Database · checked Sep 28, 2026
15	Prancer	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “Prancer is an autonomous continuous security validation platform that provides a unique way for Devs, Infra engineers and SecOps Red team and Blue team to work and collaborate in…” Source: RevenueBase Database · checked Sep 28, 2026
16	Cyberlucent	Partial evidence	San Diego, United StatesHQ checked Sep 28, 2026	1-10	10 contacts →
	Partial evidence “CyberLucent has created a software platform that adds a layer of intelligence to network edge devices (routers, gateways, servers).” Source: RevenueBase Database · checked Sep 28, 2026
17	Morado	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
18	Tbdcyber	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “TBDCyber is a cybersecurity company focused on strategy, assessments, and program build services.” Source: RevenueBase Database · checked Sep 28, 2026
19	Trustfour Technologies	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “TrustFour is a pioneer in workload and non-human identity security, providing innovative solutions for compliance, remediation, post quantum resiliency, and advanced threat…” Source: RevenueBase Database · checked Sep 28, 2026
20	Electro Specialty Systems	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Founded by brothers Dan and Bill Brault in 1987, Electro Specialty Systems is an electronic security integrator based in San Diego, California.” Source: RevenueBase Database · checked Sep 28, 2026
21	Optimeyes AI	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “OptimEyes.ai is a unique AI-powered, on-demand SaaS solution for cyber-security, data privacy and compliance risk modeling.” Source: RevenueBase Database · checked Sep 28, 2026
22	Dispatch Tech, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “At Dispatch Tech, we're dedicated to securing your digital world.” Source: RevenueBase Database · checked Sep 28, 2026
23	Skycubed	Indirect evidence	San Diego, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Skycubed is a group of experienced software developers and infrastructure specialists focused on cloud analytics and computer network defense.” Source: RevenueBase Database · checked Sep 28, 2026
24	Hannulawells	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “HannulaWells is a cyber security services provider, servicing enterprise level environments to SMB's.” Source: RevenueBase Database · checked Sep 28, 2026
25	Aegis Innovators	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “AEGIS INNOVATORS is a Microsoft partner located in Southern California that partners with other Microsoft service providers and assists organizations throughout the United States.” Source: RevenueBase Database · checked Sep 28, 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 platforms. 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 platforms.
Partial evidence: Its own public description names part of cybersecurity platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity platforms. 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 96 cybersecurity platforms based in San Diego, United States

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

As of Sep 28, 2026

45.7%Verified-email coverage

13.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 96 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 platforms, 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 platforms”. 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 platforms), 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 platforms, 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, 579 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 28, 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 platforms 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 platforms, 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 platforms are there based in San Diego, United States?

RevenueBase identified 96 cybersecurity platforms 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 platforms?

New York leads the United States with 383 headquartered companies, followed by San Francisco (257) and Austin (217). San Diego has 96.

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 579 verified decision-maker contacts tracked across these 96 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 28, 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.