Company lists · Data refreshed September 2026

Top 25 IT security consulting services based in Irvine, United States

Name: IT security consulting services based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 43 companies tracked

RevenueBase identified 43 IT security consulting services headquartered in Irvine, United States as of September 2026 and tracks 694 professional contacts across them, including 318 with verified work emails. New York is the largest hub.

This list covers IT security consulting services 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 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

43Companies

694Contacts tracked

318Verified emails

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The 25 largest IT security consulting services based in Irvine, United States

Ranked by team size

Top 25 of 43 IT security consulting services based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to IT security consulting services: 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	Tevora	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	201-500	199 contacts →
	Indirect evidence “Founded in 2003, Tevora is a specialized management consultancy focused on cybersecurity, risk, and compliance services.” Source: RevenueBase Database · checked Sep 21, 2026
2	Ejamerica	Strong evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	501-1,000	132 contacts →
	Strong evidence “We provide Digital Application Services, Cyber Security Services, IT Consulting Services, Modern End-User Services, Data Center and Cloud Services and IT Staffing services.” Source: RevenueBase Database · checked Sep 21, 2026
3	Alvaka	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 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 21, 2026
4	Patriot Consulting Technology Group	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	48 contacts →
	Indirect evidence “Our Mission is to help customers protect their Microsoft 365 corporate identities and data while taking full advantage of the productivity benefits.” Source: RevenueBase Database · checked Sep 21, 2026
5	Next IT Solutions	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	28 contacts →
	Partial 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 21, 2026
6	Right Click, INC	Strong evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	27 contacts →
	Strong evidence “Right Click is an Orange County based IT Consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
7	Esecurity Solutions	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “eSecurity Solutions is a One-Stop Cybersecurity Solution provider to businesses.” Source: RevenueBase Database · checked Sep 21, 2026
8	Greenlight Cyber	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 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 21, 2026
9	Dfnd Security, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	15 contacts →
	Partial evidence “Enterprise clients have counted on DFND Security, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
10	Atomic Technology Solutions	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial 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 21, 2026
11	Cynexlink	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	13 contacts →
	Partial evidence “Welcome to Cynexlink, your premier global IT and cybersecurity partner.” Source: RevenueBase Database · checked Sep 21, 2026
12	Privageo	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Partial evidence “Privageo is a data privacy & security solutions provider.” Source: RevenueBase Database · checked Sep 21, 2026
13	Netminded, A Technology Solutions Company	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Partial evidence “NetMinded provides full service IT support for small businesses in Southern California.” Source: RevenueBase Database · checked Sep 21, 2026
14	CSP Networks	Strong evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Strong 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 21, 2026
15	M9 Cloud	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial 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 21, 2026
16	Linkpro Technologies	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “Linkpro Technologies is a computer & network security company based out of P.O.” Source: RevenueBase Database · checked Sep 21, 2026
17	Technology's Edge	Strong evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Strong 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 21, 2026
18	Advantech IT Solutions, INC	Strong evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Strong evidence “Advantech IT Solutions, your trusted outsource partner for IT consulting, data protection, network support and maintenance.” Source: RevenueBase Database · checked Sep 21, 2026
19	Altius It, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	3 contacts →
	Partial evidence “We help organizations identify cyber risk, prevent attacks, and meet security and compliance requirements.” Source: RevenueBase Database · checked Sep 21, 2026
20	Vistem Solutions, INC	Indirect evidence	Irvine, United StatesHQ checked Sep 21, 2026	11-50	2 contacts →
	Indirect evidence “Vistem Solutions Inc.” Source: RevenueBase Database · checked Sep 21, 2026
21	Vsecops, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	2 contacts →
	Indirect evidence “We help companies make better use of existing cybersecurity investments.” Source: RevenueBase Database · checked Sep 21, 2026
22	Itperfection Network Security	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “IT Managed Service Provider, 20 Years of Experience in planning, implementing, maintaining, and troubleshooting IT infrastructure and computer networks.” Source: RevenueBase Database · checked Sep 21, 2026
23	Innova Accelerator	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
24	Greenlight Information Services, LLC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	1 contacts →
	Indirect evidence “WE BLEND CREATIVE, STRATEGIC PLANNING WITH EXPERT KNOWLEDGE TO PROVIDE YOUR COMPANY WITH 21ST CENTURY SOLUTIONS.” Source: RevenueBase Database · checked Sep 21, 2026
25	Your IT Matchmaker	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	1 contacts →
	Indirect evidence “Hello!” 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: IT security consulting services. 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 IT security consulting services.
Partial evidence: Its own public description names part of IT security consulting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT security consulting services. 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 43 IT security consulting services based in Irvine, United States

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IT security consulting services based in Irvine, United States at a glance

As of Sep 21, 2026

45.8%Verified-email coverage

16.1Average contacts per company

11-50Median size (employees)

688.4%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

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 43 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 IT security consulting services, 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 “IT security consulting services”. 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 IT security consulting services), 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 IT security consulting services, 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, 318 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.

IT security consulting services 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 IT security consulting services, 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 IT security consulting services are there based in Irvine, United States?

RevenueBase identified 43 IT security consulting services 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?

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

Which city has the most IT security consulting services?

New York leads with 296 headquartered companies, followed by Houston (185) and Atlanta (180).

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 318 verified decision-maker contacts tracked across these 43 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.