Company lists · Data refreshed November 2026

Top 25 IT security pr firms worldwide

RevenueBase identified 6,379 company matches for IT security pr firms worldwide as of November 2026 and tracks 68,018 professional contacts across them, including 16,614 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for IT security pr firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026. Country and city lists for IT security pr firms follow the table.

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 RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
6,379Companies
68,018Contacts tracked
16,614Verified emails
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The 25 largest IT security pr firms worldwide

Ranked by team size
Top 25 of 6,379 company matches for IT security pr firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchUnited StatesHQ recorded Nov 5, 2026n/a13,149 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026n/a3,342 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchMumbai, IndiaHQ recorded Nov 5, 20261,001-5,0002,056 contacts →

Exact match

“Adfactors PR, founded in 1997, is India's largest Public Relations firm.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchReston, VA, United StatesHQ recorded Nov 5, 20261,001-5,0001,346 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchLansing, MI, United StatesHQ recorded Nov 5, 2026n/a806 contacts →

Exact match

“ASK is now Convergence Networks!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchParis, FranceHQ recorded Nov 5, 202651-200558 contacts →

Exact match

“Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchNew York, FL, United StatesHQ recorded Nov 5, 2026201-500401 contacts →

Exact match

“5W is one of the largest independently owned PR and digital marketing agencies in the US.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchGurgaon, IndiaHQ recorded Nov 5, 2026201-500385 contacts →

Exact match

“eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchTempe, AZ, United StatesHQ recorded Nov 5, 2026201-500357 contacts →

Exact match

“Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchMumbai, IndiaHQ recorded Nov 5, 2026201-500355 contacts →

Exact match

“T A L A K U N C H I Networks Pvt.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchOkhla, IndiaHQ recorded Nov 5, 2026201-500307 contacts →

Exact match

“Value 360 Communications is India’s first PR Company with a focussed approach for early stage business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchWettingen, SwitzerlandHQ recorded Nov 5, 2026501-1,000290 contacts →

Exact match

“As a leading IT security enterprise, the SITS Group stands for end-to-end security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchSan Francisco, United StatesHQ recorded Nov 5, 2026201-500263 contacts →

Exact match

“Hotwire Global is the preeminent tech PR, communications, and marketing consultancy.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchSão Paulo, BrazilHQ recorded Nov 5, 2026201-500230 contacts →

Exact match

“Somos “The PR PowerHouse”, uma verdadeira potência em PR e todas as suas disciplinas.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchMaple Grove, ND, United StatesHQ recorded Nov 5, 2026201-500212 contacts →

Exact match

“Cyber Advisors is a nationwide leader in cyber security, providing a comprehensive range of Offensive, Defensive, and Risk Management services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchSao Paulo, BrazilHQ recorded Nov 5, 202651-200211 contacts →

Exact match

“O nosso trabalho é proteger o seu.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchAthens, MA, GreeceHQ recorded Nov 5, 202651-200207 contacts →

Exact match

“CENSUS is a cybersecurity engineering powerhouse.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchGurgaon, IndiaHQ recorded Nov 5, 2026201-500197 contacts →

Exact match

“PR Professionals is an innovative PR Agency which understands the importance of relationship building, consumer needs and publicity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchKatowice, PolandHQ recorded Nov 5, 2026201-500193 contacts →

Exact match

“DAGMA Bezpieczeństwo IT to firma z 40-letnim doświadczeniem, specjalizująca się w cyberbezpieczeństwie.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchRio De Janeiro, BrazilHQ recorded Nov 5, 202651-200185 contacts →

Exact match

“Centro de Medicina”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchReston, VA, United StatesHQ recorded Nov 5, 20261,001-5,000180 contacts →

Exact match

“MindPoint Group, a Quantum Sky company, is a cybersecurity specialist trusted by U.S.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchHouston, United StatesHQ recorded Nov 5, 202651-200176 contacts →

Exact match

“ValueMentor is a global information security consulting & services company that delivers real results to global business in maximizing cybersecurity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchPune, IndiaHQ recorded Nov 5, 202651-200158 contacts →

Exact match

“At Payatu we believe in following one’s passion and with that thought, we have created a world class team of researchers and executors who are bending the rules to provide state…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchMaidenhead, United KingdomHQ recorded Nov 5, 202651-200157 contacts →

Exact match

“Performanta is a global cybersecurity and data risk management company dedicated to protecting people where data matters most.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchEast Brunswick, NJ, United StatesHQ recorded Nov 5, 202651-200157 contacts →

Exact match

“At Accorian, we don’t just advise on compliance, we operationalize it.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 6,379 IT security pr firms worldwide

See the full list, filter by size, metro and specialty, and access 16,614 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT security pr firms worldwide at a glance

As of Nov 5, 2026
24.4%Verified-email coverage
10.7Average contacts per company
1-10Median size (employees)
2.6%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
4,228
11-50
1,745
51-200
299
201-500
56
501-1,000
10
1,001-5,000
9
10001+
6

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage
Every country. Country and city lists for IT security pr firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “IT security pr firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 16,614 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

IT security pr firms by location

54 lists · largest first

Every IT security pr firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT security pr firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT security pr firms are there worldwide?

RevenueBase identified 6,379 company matches for IT security pr firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Private Sector tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most IT security pr firms?

The United States leads with 1,818 companies, followed by the United Kingdom (476) and India (422). Every IT security pr firms list by country and city is linked on this page.

Which city has the most IT security pr firms?

London leads with 163 company records, followed by New York (136) and Sao Paulo (75).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 16,614 professional contacts with verified work emails tracked across these 6,379 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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.