Company lists · Data refreshed September 2026

Top 25 Cybersecurity consultancies based in Vienna, United States

Name: Cybersecurity consultancies based in Vienna, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 65 companies tracked

RevenueBase identified 65 cybersecurity consultancies headquartered in Vienna, United States as of September 2026 and tracks 2,183 professional contacts across them, including 592 with verified work emails. New York is the largest hub.

This list covers cybersecurity consultancies headquartered in Vienna, 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

65Companies

2,183Contacts tracked

592Verified emails

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The 25 largest cybersecurity consultancies based in Vienna, United States

Ranked by team size

Top 25 of 65 cybersecurity consultancies based in Vienna, 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 consultancies: 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	Actionet, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	1,001-5,000	510 contacts →
	Indirect evidence “ActioNet, Inc, headquartered in Vienna, Virginia, is a CMMI®-DEV Level 4, CMMI®-SVC Level 4, ISO ISO 27001, ISO 9001, HDI-certified, woman-owned IT Solutions Provider with strong…” Source: RevenueBase Database · checked Sep 24, 2026
2	Cambridge International Systems, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	201-500	201 contacts →
	Indirect evidence “At Cambridge International Systems, Inc.” Source: RevenueBase Database · checked Sep 24, 2026
3	Criterion Systems	Partial evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	201-500	198 contacts →
	Partial evidence “Criterion Systems, LLC, a Cherokee Federal Company,(Criterion) provides cybersecurity, cloud automation and management, IT infrastructure operations, and solutions engineering…” Source: RevenueBase Database · checked Sep 24, 2026
4	Horizon Industries, Limited	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	201-500	143 contacts →
	Indirect evidence “Horizon Industries is an IT services corporation serving Clients across the U.S.” Source: RevenueBase Database · checked Sep 24, 2026
5	SD Solutions, LLC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	51-200	83 contacts →
	Indirect evidence “Since 2011, SD Solutions, LLC has been supporting over 15 US Federal Government agencies in the areas of Cyber, Digital, Data, Strategy, and Professional Services.” Source: RevenueBase Database · checked Sep 24, 2026
6	Heartland Consulting	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	51-200	80 contacts →
	Indirect evidence “Heartland Consulting provides management consulting, information technology, and financial management services to the U.S.” Source: RevenueBase Database · checked Sep 24, 2026
7	Ironnet	Partial evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	61 contacts →
	Partial evidence “Founded in 2014, IronNet Cybersecurity is a global cybersecurity leader that is revolutionizing how enterprises, industries, and governments secure their networks.” Source: RevenueBase Database · checked Sep 24, 2026
8	Triumph Enterprises, INC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	51-200	57 contacts →
	Partial evidence “Founded in 2005, Triumph has risen to meet the Federal government’s growing need for mission-critical Cybersecurity; Business Intelligence, Analytics, and Data Visualization; and…” Source: RevenueBase Database · checked Sep 24, 2026
9	Gcyber	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	51-200	52 contacts →
	Indirect evidence “GCyber delivers secure, efficient, and scalable IT solutions that empower mission success.” Source: RevenueBase Database · checked Sep 24, 2026
10	Quzara LLC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	51 contacts →
	Partial evidence “Quzara is a DC-Based Cybersecurity firm.” Source: RevenueBase Database · checked Sep 24, 2026
11	Triplecyber Corporation	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	201-500	40 contacts →
	Indirect evidence “TripleCyber Corporation (a Rividium Inc.” Source: RevenueBase Database · checked Sep 24, 2026
12	Corsha	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	37 contacts →
	Indirect evidence “Corsha securely connects the operational systems that run our world.” Source: RevenueBase Database · checked Sep 24, 2026
13	Applylogic Consulting Group, LLC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	51-200	35 contacts →
	Indirect evidence “ApplyLogic is a certified Service-Disabled Veteran Owned Small Business (SDVOSB) and leading provider of integrated technology solutions to customers across the public and private…” Source: RevenueBase Database · checked Sep 24, 2026
14	Catalyst Operations & Analytics	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	51-200	32 contacts →
	Indirect evidence “Catalyst Operations & Analytics, LLC (COA) provides tailored support to Government and commercial clients through operational and cyber support services, artificial intelligence…” Source: RevenueBase Database · checked Sep 24, 2026
15	Dayblink Consulting	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	51-200	29 contacts →
	Indirect evidence “DayBlink Consulting provides cyber security, applied automation, cloud enablement, and strategic execution solutions to Fortune 500 companies, and pro bono consulting to…” Source: RevenueBase Database · checked Sep 24, 2026
16	Accessagility	Partial evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	25 contacts →
	Partial evidence “AccessAgility is based out of the Washington, DC metro area and provides IT and Cybersecurity solutions.” Source: RevenueBase Database · checked Sep 24, 2026
17	K2 Group, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	24 contacts →
	Indirect evidence “K2 Group was founded in 2004 as a Service-Disabled, Veteran-Owned Small Business (SDVOSB) by an experienced Special Forces operator with advanced degrees in Information Security.” Source: RevenueBase Database · checked Sep 24, 2026
18	Cleared Solutions INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	21 contacts →
	Indirect evidence “Cleared Solutions is a national security-focused, small business platform for highly skilled IT consultants and strategic advisers specializing in modern, agile, and secure IT…” Source: RevenueBase Database · checked Sep 24, 2026
19	IP Consulting, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	15 contacts →
	Indirect evidence “Named to the INC from 2014 to 2017, IP Consulting, Inc.(IPC) is one of the fastest-growing privately held companies in the United States.” Source: RevenueBase Database · checked Sep 24, 2026
20	Second Factor, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	15 contacts →
	Indirect evidence “Second Factor, Inc.(SFI) is a information technology consulting company focused on securing information technology systems.” Source: RevenueBase Database · checked Sep 24, 2026
21	Televate, LLC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	15 contacts →
	Indirect evidence “Televate is a nationally-recognized information technology and engineering consultancy delivering innovative broadband, public safety, and wireless communication solutions to…” Source: RevenueBase Database · checked Sep 24, 2026
22	Netmgm	Partial evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	12 contacts →
	Partial evidence “Network Management, Inc.(NetMGM) is a nationwide technology management and cybersecurity consulting company that builds, manages, secures and supports Information Technology…” Source: RevenueBase Database · checked Sep 24, 2026
23	Base Solutions LLC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	1-10	11 contacts →
	Indirect evidence “In today’s global business market, advancements in technology play a significant role in the success of every business.” Source: RevenueBase Database · checked Sep 24, 2026
24	USX Cyber	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	1-10	10 contacts →
	Indirect evidence “Cyber attackers are constantly evolving.” Source: RevenueBase Database · checked Sep 24, 2026
25	Zvolvant Solutions	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	11-50	10 contacts →
	Indirect evidence “Zvolvant Solutions is an SBA 8(a) certified information technology services firm committed to transforming IT in the Federal space.” 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 consultancies. 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 consultancies.
Partial evidence: Its own public description names part of cybersecurity consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity consultancies. 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 65 cybersecurity consultancies based in Vienna, United States

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Cybersecurity consultancies based in Vienna, United States at a glance

As of Sep 24, 2026

27.1%Verified-email coverage

33.6Average contacts per company

11-50Median size (employees)

936.9%Largest-city concentration · New York

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 Vienna, so it is reported there. Company counts and contact totals on this page are exact for Vienna, over 65 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 consultancies, 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 Vienna, United States whose own description of what they do matches “cybersecurity consultancies”. 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 consultancies), 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 consultancies, and records with no verified work email. Companies headquartered outside Vienna 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, 592 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 consultancies 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 consultancies, 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 consultancies are there based in Vienna, United States?

RevenueBase identified 65 cybersecurity consultancies headquartered in Vienna, 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?

Actionet, INC, headquartered in Vienna, tops this list with the largest team on record.

Which city has the most cybersecurity consultancies?

New York leads with 609 headquartered companies, followed by Washington (366) and Houston (303).

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 592 verified decision-maker contacts tracked across these 65 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.