Company lists · Data refreshed September 2026

Top 14 Aerospace cybersecurity consulting firms based in Denver, United States

RevenueBase identified 27 aerospace cybersecurity consulting firms headquartered in Denver, United States as of September 2026 and tracks 244 professional contacts across them, including 134 with verified work emails. Across the United States, Washington is the largest hub for this category (88 companies); Denver has 27.

This list covers aerospace cybersecurity consulting firms headquartered in Denver, 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 27, 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 27, 2026 86% judged on-target in blind review
27Companies
244Contacts tracked
134Verified emails
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The 14 largest aerospace cybersecurity consulting firms based in Denver, United States

Ranked by team size
Top 14 of 27 aerospace cybersecurity consulting firms based in Denver, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to aerospace cybersecurity consulting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 202651-200111 contacts →

Indirect evidence

“DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.”

Source: RevenueBase Database · checked Sep 27, 2026
2Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 202651-20025 contacts →

Indirect evidence

“While it’s good to have a technology department, sometimes you need to call in freaky smart and talented gals, guys and everyone in between as your go-to fixers.”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-1012 contacts →

Partial evidence

“Semper Sec is a cyber security consulting firm that helps businesses build security programs and navigate compliance in order maintain competitive advantage.”

Source: RevenueBase Database · checked Sep 27, 2026
4Partial evidenceDenver, United StatesHQ checked Sep 27, 202611-505 contacts →

Partial evidence

“Colorado Cyber Security Consulting Firm We cater our consultative services to companies that want to verify the effectiveness of their information system security measures.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidenceDenver, CO, United StatesHQ checked Sep 27, 202611-505 contacts →

Partial evidence

“DevilDog specializes in making cybersecurity easy with complete customized security solutions from start to finish.”

Source: RevenueBase Database · checked Sep 27, 2026
6Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-105 contacts →

Indirect evidence

“Lost Rabbit Labs offers in-depth and comprehensive security assessments tailored specifically to meet any clients security needs.”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-105 contacts →

Indirect evidence

“IT.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 202611-503 contacts →

Indirect evidence

“Specializing in Cyber, RF, and Reverse Engineering”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceDenver, CO, United StatesHQ checked Sep 27, 202651-2003 contacts →

Partial evidence

“At Brush Cyber, we understand that in today's digital landscape, cybersecurity isn't just an afterthought-it's a strategic imperative.”

Source: RevenueBase Database · checked Sep 27, 2026
10Partial evidenceDenver, CO, United StatesHQ checked Sep 27, 202611-503 contacts →

Partial evidence

“RockCyber, a premier cybersecurity firm, is laser-focused on providing cutting-edge security services that protect businesses from dynamic cyber threats.”

Source: RevenueBase Database · checked Sep 27, 2026
11Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-103 contacts →

Indirect evidence

“Security Pursuit provides computer security services to help organizations protect their business-critical information systems.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-102 contacts →

Partial evidence

“SpyderSec is an information security consulting organization with a straightforward mission: To enhance the security posture of our clients.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-102 contacts →

Indirect evidence

“We help spacecraft, launch vehicle, and defense teams de-risk flight-critical systems and hit milestones without surprises.”

Source: RevenueBase Database · checked Sep 27, 2026
14Strong evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-101 contacts →

Strong evidence

“CloudSapio is a premier cybersecurity and technology consulting firm, renowned for delivering exceptional guidance and innovative solutions to a broad spectrum of clients, ranging…”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 14 of 27 aerospace cybersecurity consulting firms based in Denver, United States

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Aerospace cybersecurity consulting firms based in Denver, United States at a glance

As of Sep 27, 2026
54.9%Verified-email coverage
9.0Average contacts per company
1-10Median size (employees)
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
15
11-50
8
51-200
4

Email recency for this list is measured across the whole United States list rather than for Denver, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 27 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 aerospace cybersecurity consulting firms, 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 Denver, United States whose own description of what they do matches “aerospace cybersecurity consulting firms”. 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 aerospace cybersecurity consulting firms), 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 aerospace cybersecurity consulting firms, and records with no verified work email. Companies headquartered outside Denver 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, 134 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 27, 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.

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 aerospace cybersecurity consulting firms, 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 aerospace cybersecurity consulting firms are there based in Denver, United States?

RevenueBase identified 27 aerospace cybersecurity consulting firms headquartered in Denver, 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?

Directdefense, headquartered in Denver, tops this list with the largest team on record.

Which city in the United States has the most aerospace cybersecurity consulting firms?

Washington leads the United States with 88 headquartered companies, followed by Atlanta (71) and New York (71). Denver has 27.

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 134 verified decision-maker contacts tracked across these 27 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 27, 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.