Company lists · Data refreshed September 2026

Top 25 Cybersecurity managed services providers based in Irvine, United States

Name: Cybersecurity managed services providers based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 42 companies tracked

RevenueBase identified 42 cybersecurity managed services providers headquartered in Irvine, United States as of September 2026 and tracks 1,141 professional contacts across them, including 499 with verified work emails. Across the United States, New York is the largest hub for this category (195 companies); Irvine has 42.

This list covers cybersecurity managed services providers headquartered in Irvine, 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

42Companies

1,141Contacts tracked

499Verified emails

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The 25 largest cybersecurity managed services providers based in Irvine, United States

Ranked by team size

Top 25 of 42 cybersecurity managed services providers based in Irvine, 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 managed services providers: 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	Calltek	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	290 contacts →
	Indirect evidence “For more than two decades, CallTek has been a global leader in delivering secure, compliant, and reliable white-label technical support services.” Source: RevenueBase Database · checked Sep 28, 2026
2	Tevora	Strong evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	199 contacts →
	Strong evidence “Founded in 2003, Tevora is a specialized management consultancy focused on cybersecurity, risk, and compliance services.” Source: RevenueBase Database · checked Sep 28, 2026
3	Proficio	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	182 contacts →
	Partial evidence “Proficio is a world-class Managed Security Service Provider (MSSP) providing managed detection and response solutions, 24×7 security monitoring and advanced data breach prevention…” Source: RevenueBase Database · checked Sep 28, 2026
4	Alvaka	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	57 contacts →
	Partial evidence “Alvaka manages and secures the IT infrastructure of mid-market and enterprise-class companies, enabling them to operate seamlessly in the non-stop, mission-critical world that has…” Source: RevenueBase Database · checked Sep 28, 2026
5	Lmntrix	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	57 contacts →
	Partial evidence “At LMNTRIX, we help organizations take control of their cybersecurity by delivering advanced threat detection, proactive response, and deep adversarial insights-without the…” Source: RevenueBase Database · checked Sep 28, 2026
6	Britecity	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “BRITECITY is a Managed Service Provider (MSP) based in Irvine, California, serving small and mid-sized businesses across Orange County.” Source: RevenueBase Database · checked Sep 28, 2026
7	Kaufmanit, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “KaufmanIT is an award-winning managed service provider from Irvine, specializing in IT solutions tailored to small to mid-sized businesses.” Source: RevenueBase Database · checked Sep 28, 2026
8	Techheights	Strong evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	29 contacts →
	Strong evidence “TechHeights is an award-winning Managed Service Provider delivering enterprise-grade IT, cybersecurity, and cloud solutions to businesses across Orange County, Los Angeles, and…” Source: RevenueBase Database · checked Sep 28, 2026
9	Next IT Solutions	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Protecting & Optimizing Orange County and Nationwide Businesses for 14+ Years IT and Cyber Support in Irvine, CA Next IT Solutions partners with organizations in delivering state…” Source: RevenueBase Database · checked Sep 28, 2026
10	LAN WAN Enterprise IT Solutions	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “LAN WAN IT Solutions is the market-leading Managed IT Services and Solutions provider in Orange County.” Source: RevenueBase Database · checked Sep 28, 2026
11	Esecurity Solutions	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “eSecurity Solutions is a One-Stop Cybersecurity Solution provider to businesses.” Source: RevenueBase Database · checked Sep 28, 2026
12	Kumo Cloud Solutions	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “Kumo is one of the fastest-growing Tech Solution Providers in Southern California.” Source: RevenueBase Database · checked Sep 28, 2026
13	Greenlight Cyber	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Welcome to Greenlight Cyber, where we merge creativity and strategic expertise with cutting-edge technology to secure and elevate your business.” Source: RevenueBase Database · checked Sep 28, 2026
14	Strikeworks	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Let’s face it: IT isn’t the most glamorous part of running a business, but it doesn’t have to be a constant headache either.” Source: RevenueBase Database · checked Sep 28, 2026
15	DML IT Solutions	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “AT DML IT solutions, we're reshaping the MSP landscape across Orange County and Los Angeles County.” Source: RevenueBase Database · checked Sep 28, 2026
16	Atomic Technology Solutions	Strong evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Strong evidence “At Atomic Technology Solutions, we provide organizations with reliable, enterprise-grade Managed IT services and Cybersecurity solutions that minimize risk and ensure operational…” Source: RevenueBase Database · checked Sep 28, 2026
17	Cynexlink	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	13 contacts →
	Partial evidence “Welcome to Cynexlink, your premier global IT and cybersecurity partner.” Source: RevenueBase Database · checked Sep 28, 2026
18	CSP Networks	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “CSP Networks is an award-winning IT Managed Service Provider (MSP), that combines strategic advisory, technical and cyber security expertise, and the ability to effectively…” Source: RevenueBase Database · checked Sep 28, 2026
19	Amicus MSP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “We Solve IT For You!” Source: RevenueBase Database · checked Sep 28, 2026
20	Linutech Solutions	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “At our company, we provide enterprises with cutting-edge, fully integrated IT solutions tailored to their specific needs.” Source: RevenueBase Database · checked Sep 28, 2026
21	M9 Cloud	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “M9 Cloud offers a full suite of affordable & scalable outsourcing & professional services solutions (including):* Cyber Security Services * Infrastructure as a Service (IaaS)…” Source: RevenueBase Database · checked Sep 28, 2026
22	Ayvant INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “Ayvant is a trusted Managed IT Services Provider catering to the technology needs of small and medium businesses across the US and Canada.” Source: RevenueBase Database · checked Sep 28, 2026
23	Gibb Network Solutions INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
24	Technology's Edge	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Technology’s Edge provides a high level of IT Managed Security Services to businesses in the Greater LA & Orange County Area.” Source: RevenueBase Database · checked Sep 28, 2026
25	Altius It, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	3 contacts →
	Indirect evidence “We help organizations identify cyber risk, prevent attacks, and meet security and compliance requirements.” 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 managed services providers. 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 managed services providers.
Partial evidence: Its own public description names part of cybersecurity managed services providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity managed services providers. 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 42 cybersecurity managed services providers based in Irvine, United States

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Cybersecurity managed services providers based in Irvine, United States at a glance

As of Sep 28, 2026

43.7%Verified-email coverage

27.2Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 42 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 managed services providers, 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 Irvine, United States whose own description of what they do matches “cybersecurity managed services providers”. 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 managed services providers), 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 managed services providers, and records with no verified work email. Companies headquartered outside Irvine 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, 499 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 managed services providers 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 managed services providers, 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 managed services providers are there based in Irvine, United States?

RevenueBase identified 42 cybersecurity managed services providers headquartered in Irvine, 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?

Calltek, headquartered in Irvine, tops this list with the largest team on record.

Which city in the United States has the most cybersecurity managed services providers?

New York leads the United States with 195 headquartered companies, followed by Houston (128) and Austin (112). Irvine has 42.

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 499 verified decision-maker contacts tracked across these 42 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.