Company lists · Data refreshed September 2026

Top 25 Business cybersecurity services based in Denver, United States

Name: Business cybersecurity services based in Denver, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 49 companies tracked

RevenueBase identified 49 business cybersecurity services headquartered in Denver, United States as of September 2026 and tracks 856 professional contacts across them, including 470 with verified work emails. New York is the largest hub.

This list covers business cybersecurity services 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 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

49Companies

856Contacts tracked

470Verified emails

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The 25 largest business cybersecurity services based in Denver, United States

Ranked by team size

Top 25 of 49 business cybersecurity services based in Denver, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to business cybersecurity 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	RED Canary, A Zscaler Company	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	201-500	408 contacts →
	Indirect evidence “Red Canary stops cyber threats no one else does, so organizations can fearlessly pursue their missions.” Source: RevenueBase Database · checked Sep 21, 2026
2	Directdefense	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	111 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 21, 2026
3	Ecreek IT Solutions	Strong evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	53 contacts →
	Strong evidence “eCreek IT delivers managed IT services and cybersecurity solutions for small to mid-sized businesses across Denver and the Colorado Front Range.” Source: RevenueBase Database · checked Sep 21, 2026
4	Accuvant	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	501-1,000	48 contacts →
	Indirect evidence “Accuvant is a leading provider of information security services and solutions serving enterprise-class organizations across North America.” Source: RevenueBase Database · checked Sep 21, 2026
5	Point Solutions Group, LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	25 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 21, 2026
6	Analytics Computers	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Analytics partners with companies to maximize the growth, success, and prosperity of their business.” Source: RevenueBase Database · checked Sep 21, 2026
7	Cyber Sainik	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Cyber Sainik protects organizations from contemporary, sophisticated threats by delivering enterprise-level tools, methods, procedures, and profound expertise, alongside…” Source: RevenueBase Database · checked Sep 21, 2026
8	Point Solutions Security	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Point Solutions Security was born from a belief that anything is possible when you step outside your comfort zone and push boundaries.” Source: RevenueBase Database · checked Sep 21, 2026
9	Semper SEC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	12 contacts →
	Indirect 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 21, 2026
10	Teamlogic IT Of West Denver	Strong evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Strong evidence “How do you feel about your organization's IT and cybersecurity?” Source: RevenueBase Database · checked Sep 21, 2026
11	Devildog Cybersecurity	Strong evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	5 contacts →
	Strong evidence “DevilDog specializes in making cybersecurity easy with complete customized security solutions from start to finish.” Source: RevenueBase Database · checked Sep 21, 2026
12	Cynthetic Systems	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “Every Cynthetic Systems engagement is managed and ongoing, not a one-time project.” Source: RevenueBase Database · checked Sep 21, 2026
13	Lost Rabbit Labs	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	5 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 21, 2026
14	Class IV	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “IT.” Source: RevenueBase Database · checked Sep 21, 2026
15	M2dcon Technologies LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Culture of Awareness Security is more than the sum of its parts Some MSP’s work hard with the technical: Firewalls, patches, anti-virus, web filtering, Zero Trust, SEIM…” Source: RevenueBase Database · checked Sep 21, 2026
16	Technologywest	Strong evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Strong evidence “TechnologyWest is a Colorado-based IT services provider delivering cybersecurity solutions, managed IT services, cloud infrastructure, networking, unified communications, and…” Source: RevenueBase Database · checked Sep 21, 2026
17	Thunder Rock Technologies	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Thunder Rock is a technology company that is dedicated to making sure your business can function optimally and efficiently while reducing waste.” Source: RevenueBase Database · checked Sep 21, 2026
18	Libertyid	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Why LibertyID?” Source: RevenueBase Database · checked Sep 21, 2026
19	Cypress Data Defense	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	4 contacts →
	Indirect evidence “At Cypress Data Defense, our goal is to help organizations secure their IT and Application Development Operations using a pragmatic, risk-based approach.” Source: RevenueBase Database · checked Sep 21, 2026
20	Technology Response Team, LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	4 contacts →
	Indirect evidence “Is your team losing precious minutes (or hours) with computers being down- Do you know what you would do if your company was attacked by an email phishing scam and all your data…” Source: RevenueBase Database · checked Sep 21, 2026
21	Tapzeo	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Technology Aligned with your Business.” Source: RevenueBase Database · checked Sep 21, 2026
22	Iron Aegis LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
23	Brush Cyber	Strong evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	3 contacts →
	Strong 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 21, 2026
24	Rockcyber	Strong evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	11-50	3 contacts →
	Strong 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 21, 2026
25	Security Pursuit, LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “Security Pursuit provides computer security services to help organizations protect their business-critical information systems.” 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: business cybersecurity 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 business cybersecurity services.
Partial evidence: Its own public description names part of business cybersecurity services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business cybersecurity 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 49 business cybersecurity services based in Denver, United States

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Business cybersecurity services based in Denver, United States at a glance

As of Sep 21, 2026

54.9%Verified-email coverage

17.5Average contacts per company

1-10Median size (employees)

346.9%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 Denver, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 49 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 business cybersecurity 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 Denver, United States whose own description of what they do matches “business cybersecurity 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 business cybersecurity 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 business cybersecurity services, 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, 470 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.

Business cybersecurity 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 business cybersecurity 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 business cybersecurity services are there based in Denver, United States?

RevenueBase identified 49 business cybersecurity services 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?

RED Canary, A Zscaler Company, headquartered in Denver, tops this list with the largest team on record.

Which city has the most business cybersecurity services?

New York leads with 170 headquartered companies, followed by Atlanta (101) and Houston (100).

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 470 verified decision-maker contacts tracked across these 49 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.