Company lists · Data refreshed September 2026

Top 25 Biggest security companies based in Los Angeles, United States

Name: Biggest security companies based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 90 companies tracked

RevenueBase identified 90 biggest security companies headquartered in Los Angeles, United States as of September 2026 and tracks 1,816 professional contacts across them, including 150 with verified work emails. New York is the largest hub.

This list covers biggest security companies headquartered in Los Angeles, 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

90Companies

1,816Contacts tracked

150Verified emails

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The 25 largest biggest security companies based in Los Angeles, United States

Ranked by team size

Top 25 of 90 biggest security companies based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to biggest security 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	Professional Security Consultants, INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	626 contacts →
	Partial evidence “Professional Security Consultants, Inc.(PSC) is a world-class provider of security guard services, patrol, investigations, backgrounds, consulting, security screening & specialty…” Source: RevenueBase Database · checked Sep 21, 2026
2	NIC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	n/a	581 contacts →
	Indirect evidence “NIC has been providing IT Solutions, Cybersecurity, and Cloud Services for businesses and organizations for the past two decades.” Source: RevenueBase Database · checked Sep 21, 2026
3	Global Security Concepts	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	501-1,000	102 contacts →
	Partial evidence “A security company committed to serving our clients at the highest level.” Source: RevenueBase Database · checked Sep 21, 2026
4	Crimson IT	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	51-200	43 contacts →
	Partial evidence “Combining robust human and AI powered cyber security measures with efficient IT management, our business delivers comprehensive solutions.” Source: RevenueBase Database · checked Sep 21, 2026
5	Bogaard Group International, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	51-200	32 contacts →
	Indirect evidence “At BGI, we approach every project with a best practices philosophy and an aim to balance risks and threats with global market standards.” Source: RevenueBase Database · checked Sep 21, 2026
6	Ollivier Managed Security Smart Site	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	28 contacts →
	Partial evidence “Ollivier Corporation specializes in physical and networked security solutions to secure company assets, personnel, facilities, data, and to prevent fraud.” Source: RevenueBase Database · checked Sep 21, 2026
7	Divoro	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	24 contacts →
	Partial evidence “Divoro is a provider of Cyber Security and Technology services to software and technology-enabled organizations.” Source: RevenueBase Database · checked Sep 21, 2026
8	Netready	Indirect evidence	Los Angeles, United StatesHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “At Netready, we help Southern California businesses take control of their IT and Cybersecurity, from infrastructure and cloud systems to monitoring, compliance, and prevention.” Source: RevenueBase Database · checked Sep 21, 2026
9	Franklin Global, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
10	D&s Security	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “If you need safety, you need D&S Security!” Source: RevenueBase Database · checked Sep 21, 2026
11	Xcape, INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	6 contacts →
	Partial evidence “At Xcape, Inc.®, we are a team of cybersecurity professionals specializing in building, connecting, supporting, and securing mission-critical infrastructure.” Source: RevenueBase Database · checked Sep 21, 2026
12	Catenactio	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “Mission: Treat People Well.” Source: RevenueBase Database · checked Sep 21, 2026
13	Discloze	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	5 contacts →
	Partial evidence “Discloze is a CREST-accredited offensive security firm based in the United States.” Source: RevenueBase Database · checked Sep 21, 2026
14	Dotwave Solutions	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “DotWave Solutions is a cybersecurity consulting firm founded by award-winning professor, Dr.” Source: RevenueBase Database · checked Sep 21, 2026
15	Itac Security	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “Founded by ex-Israeli Police Special Forces Officer, ITAC provides specialty security services and tactical training.” Source: RevenueBase Database · checked Sep 21, 2026
16	Perch Technology	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	3 contacts →
	Indirect evidence “At Perch Technology, we specialize in signals intelligence and counter-surveillance measures, providing advanced solutions tailored for law enforcement, government agencies, and…” Source: RevenueBase Database · checked Sep 21, 2026
17	Intlös	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “IntLös is a Privacy-focused Information Security Managed Service Provider (MSP), with over 15 years of experience providing simply elegant services tailored to exceed our client's…” Source: RevenueBase Database · checked Sep 21, 2026
18	Generative Strategies	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “At Generative Strategies, we empower organizations to navigate the complex landscape of IT risk and cybersecurity with confidence and precision.” Source: RevenueBase Database · checked Sep 21, 2026
19	Aable Security	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	51-200	3 contacts →
	Partial evidence “Aable Security has been protecting Los Angeles since 1998 with one promise, dependable security you can trust.” Source: RevenueBase Database · checked Sep 21, 2026
20	Custom Cybersecurity Solutions LLC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	3 contacts →
	Indirect evidence “CMMC L2 Consultation, Implementation, Gap Analysis, and Mock Assessment services.” Source: RevenueBase Database · checked Sep 21, 2026
21	IT Cloudlink LLC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “IT CloudLink LLC is a managed IT service and security provider specializing in cloud computing, cybersecurity and artificial intelligence solutions.” Source: RevenueBase Database · checked Sep 21, 2026
22	Redtorch INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	2 contacts →
	Partial evidence “RedTorch, Inc (RT) is poised to take over this market segment as at its core are decades of Cyber security technology research and development, cyber intelligence collection and…” Source: RevenueBase Database · checked Sep 21, 2026
23	Q4 Technologies	Partial evidence	Los Angeles, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “Q4 Technologies: Your Virtual Security Organization (VSO) Q4 Technologies, a Virtual Security Organization (VSO).” Source: RevenueBase Database · checked Sep 21, 2026
24	Qubric Security	Partial evidence	Los Angeles, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “Qubric Security is a cybersecurity consulting firm that helps organizations protect what they value most.” Source: RevenueBase Database · checked Sep 21, 2026
25	Wired World	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “We are here to offer our customers the best IT Services and Security solutions that help keep their businesses operational and cost effective.” 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: biggest security 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 biggest security companies.
Partial evidence: Its own public description names part of biggest security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biggest security 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 90 biggest security companies based in Los Angeles, United States

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Biggest security companies based in Los Angeles, United States at a glance

As of Sep 21, 2026

8.3%Verified-email coverage

20.2Average contacts per company

1-10Median size (employees)

237.8%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

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 90 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 biggest security 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 Los Angeles, United States whose own description of what they do matches “biggest security 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 biggest security 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 biggest security companies, and records with no verified work email. Companies headquartered outside Los Angeles 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, 150 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.

Biggest security companies 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 biggest security 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 biggest security companies are there based in Los Angeles, United States?

RevenueBase identified 90 biggest security companies headquartered in Los Angeles, 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?

Professional Security Consultants, INC, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most biggest security companies?

New York leads with 214 headquartered companies, followed by Houston (149) and Washington (143).

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 150 verified decision-maker contacts tracked across these 90 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.