Company lists · Data refreshed September 2026

Top 25 Cybersecurity marketing agencies based in the United States

RevenueBase identified 4,152 cybersecurity marketing agencies headquartered in the United States as of September 2026 and tracks 65,315 professional contacts across them, including 21,255 with verified work emails and 18,882 with mobile numbers. New York is the largest hub.

This list covers cybersecurity marketing agencies headquartered in the 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
4,152Companies
65,315Contacts tracked
21,255Verified emails
18,882Mobile numbers
Unlock all 4,152 companies Free signup · no credit card · 500 free credits

The 25 largest cybersecurity marketing agencies based in the United States

Ranked by team size
Top 25 of 4,152 cybersecurity marketing agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names cybersecurity marketing agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
SymantecPartial evidence
San Jose, CA, United States10001+11,179

“Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.”

Source: company website · checked Sep 3, 2026
2
BugcrowdIndirect evidence
San Francisco, CA, United Statesn/a3,566

“We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…”

Source: company website · checked Sep 3, 2026
3
OPTIVIndirect evidence
Chantilly, VA, United States1,001-5,0002,206

“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.”

Source: company website · checked Sep 3, 2026
4
BitdefenderPartial evidence
Fort Lauderdale, FL, United States1,001-5,0002,141

“Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.”

Source: company website · checked Sep 3, 2026
5
ReliaquestIndirect evidence
Sandy, UT, United States1,001-5,0001,252

“ReliaQuest exists to Make Security Possible.”

Source: company website · checked Sep 3, 2026
6Austin, TX, United States1,001-5,0001,252

“Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.”

Source: company website · checked Sep 3, 2026
7
Guidepoint SecurityPartial evidence
Tampa, FL, United States1,001-5,0001,234

“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.”

Source: company website · checked Sep 3, 2026
8
CoalfireStrong evidence
Chicago, IL, United States1,001-5,000960

“Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.”

Source: company website · checked Sep 3, 2026
9
Fireeye, INCIndirect evidence
Milpitas, CA, United States1,001-5,000679

“We are now officially Trellix!”

Source: company website · checked Sep 3, 2026
10
VikingcloudPartial evidence
Chicago, IL, United States1,001-5,000618

“VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.”

Source: company website · checked Sep 3, 2026
11
Vc3Partial evidence
Memphis, TN, United States501-1,000517

“VC3 is a managed IT and cybersecurity services provider serving organizations throughout the US and Canada.”

Source: company website · checked Sep 3, 2026
12
Ultraviolet CyberIndirect evidence
Phoenix, AZ, United States501-1,000517

“UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program.”

Source: company website · checked Sep 3, 2026
13
SecurityhqPartial evidence
New York, NY, United States501-1,000492

“SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.”

Source: company website · checked Sep 3, 2026
14
Kudelski SecurityPartial evidence
Irving, TX, United States201-500404

“Kudelski Security is a premier cybersecurity solutions provider, working with the most security-conscious organizations in Europe and across the United States.”

Source: company website · checked Sep 3, 2026
15
Security Risk AdvisorsPartial evidence
Philadelphia, PA, United States201-500311

“We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.”

Source: company website · checked Sep 3, 2026
16
LogicallyIndirect evidence
Danbury, CT, United States201-500307

“Welcome to Logically.”

Source: company website · checked Sep 3, 2026
17
Cynet SecurityPartial evidence
Boston, MA, United States201-500304

“Cynet’s unified, AI-powered cybersecurity platform brings together a full suite of security capabilities in a single, simple solution, backed by 24x7 SOC support.”

Source: company website · checked Sep 3, 2026
18
Cipher A Prosegur CompanyPartial evidence
Miami, FL, United States201-500294

“We are Cipher, a company from the Prosegur group specializing in Cybersecurity.”

Source: company website · checked Sep 3, 2026
19Cedar Hill, TX, United States201-500251

“Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.”

Source: company website · checked Sep 3, 2026
20
AXURPartial evidence
Miami, FL, United States201-500233

“Axur is the external cybersecurity company empowering security teams to detect, inspect, and respond to threats beyond the perimeter.”

Source: company website · checked Sep 3, 2026
21
Arkose LabsIndirect evidence
San Mateo, CA, United States201-500221

“Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…”

Source: company website · checked Sep 3, 2026
22
Netdata CybersecurityPartial evidence
Miami, FL, United States201-500209

“Netdata is a leading global cybersecurity services partner with more than 200 certified engineers and over 1,500 certifications, widely recognized as a partner of Palo Alto…”

Source: company website · checked Sep 3, 2026
23Reston, VA, United States1,001-5,000208

“When it comes to Information Security Consulting, we are the team the specialists turn to.”

Source: company website · checked Sep 3, 2026
24Chantilly, VA, United States201-500208

“Effective strategies for successful solutions With the right mix of specialists, we provide cyber security, language, intelligence, and information technology solutions for both…”

Source: company website · checked Sep 3, 2026
25
AGIOPartial evidence
Oklahoma City, OK, United States201-500205

“Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…”

Source: company website · checked Sep 3, 2026

Showing 25 of 4,152 cybersecurity marketing agencies based in the United States

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Cybersecurity marketing agencies based in the United States at a glance

As of Sep 3, 2026
1-10Median size (employees)
New YorkLargest hub · 125 HQs
18,882Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
2,570
11-50
1,170
51-200
291
201-500
59
501-1,000
21
1,001-5,000
22
10001+
6

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 marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “cybersecurity marketing agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among cybersecurity marketing agencies, and records with no verified work email. Companies headquartered outside United States 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 an evidence 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, 21,255 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 3, 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 marketing agencies by metro

  • Cybersecurity marketing agencies in New York125
  • Cybersecurity marketing agencies in Atlanta86
  • Cybersecurity marketing agencies in Miami75
  • Cybersecurity marketing agencies in Chicago70
  • Cybersecurity marketing agencies in Austin69
  • Cybersecurity marketing agencies in Washington65
  • Cybersecurity marketing agencies in Dallas62

Frequently asked

How many cybersecurity marketing agencies are there based in the United States?

RevenueBase identified 4,152 cybersecurity marketing agencies headquartered in the 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?

Symantec, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most cybersecurity marketing agencies?

New York leads with 125 headquartered companies, followed by Atlanta (86) and Miami (75).

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 21,255 verified decision-maker contacts tracked across these 4,152 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 3, 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 SmartSearch, 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.