Company lists · Data refreshed September 2026

Top 25 Cybersecurity public relations agencies worldwide

Name: Cybersecurity public relations agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 6,844 companies tracked

RevenueBase identified 6,844 cybersecurity public relations agencies worldwide as of September 2026 and tracks 63,455 professional contacts across them, including 20,331 with verified work emails. The United States is the largest market and London the largest hub.

This list covers cybersecurity public relations agencies worldwide, 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 28, 2026. Country and city lists for cybersecurity public relations agencies follow the table.

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 28, 2026 86% judged on-target in blind review

6,844Companies

63,455Contacts tracked

20,331Verified emails

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The 25 largest cybersecurity public relations agencies worldwide

Ranked by team size

Top 25 of 6,844 cybersecurity public relations agencies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity public relations agencies: 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	Adfactors PR	Strong evidence	Mumbai, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,920 contacts →
	Strong evidence “Adfactors PR, founded in 1997, is India's largest Public Relations firm.” Source: RevenueBase Database · checked Sep 28, 2026
2	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,232 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 28, 2026
3	Trustwave, A Levelblue Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	501-1,000	874 contacts →
	Partial evidence “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026
4	Application Specialist Kompany ASK	Indirect evidence	Lansing, MI, United StatesHQ checked Sep 28, 2026	n/a	785 contacts →
	Indirect evidence “ASK is now Convergence Networks!” Source: RevenueBase Database · checked Sep 28, 2026
5	Everfox	Indirect evidence	Herndon, United StatesHQ checked Sep 28, 2026	1,001-5,000	636 contacts →
	Indirect evidence “Everfox delivers trusted connectivity to protect the world's most critical environments, safeguarding the sensitive information behind decision advantage.” Source: RevenueBase Database · checked Sep 28, 2026
6	Advens	Partial evidence	Paris, ItalyHQ checked Sep 28, 2026	501-1,000	586 contacts →
	Partial evidence “Advens is a European, independent and outstanding leader in cybersecurity.” Source: RevenueBase Database · checked Sep 28, 2026
7	Ultraviolet Cyber	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	501-1,000	523 contacts →
	Indirect evidence “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…” Source: RevenueBase Database · checked Sep 28, 2026
8	own.security	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	506 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
9	Securityhq	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	502 contacts →
	Partial evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 28, 2026
10	Neosecure By SEK	Indirect evidence	Retiro, ArgentinaHQ checked Sep 28, 2026	501-1,000	414 contacts →
	Indirect evidence “Con más de 20 años de experiencia, 750 colaboradores y una base de más de 650 clientes en la región, operamos en los mercados de Brasil, Chile, Argentina, Colombia y Perú, donde…” Source: RevenueBase Database · checked Sep 28, 2026
11	5wpr	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	397 contacts →
	Indirect evidence “5WPR is one of the largest independently owned PR and digital marketing agencies in the US.” Source: RevenueBase Database · checked Sep 28, 2026
12	PT Itsec Asia TBK	Partial evidence	Jakarta, IndonesiaHQ checked Sep 28, 2026	201-500	388 contacts →
	Partial evidence “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Source: RevenueBase Database · checked Sep 28, 2026
13	S-Rm	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	351 contacts →
	Indirect evidence “S-RM is a global intelligence and cyber security consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
14	SK Shieldus	Indirect evidence	경기도, South KoreaHQ checked Sep 28, 2026	5,001-10,000	348 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
15	Truesec	Indirect evidence	SwedenHQ checked Sep 28, 2026	201-500	332 contacts →
	Indirect evidence “Prevent Breach & Minimize Impact” Source: RevenueBase Database · checked Sep 28, 2026
16	bi.zone	Indirect evidence	Moscow, RussiaHQ checked Sep 28, 2026	1,001-5,000	328 contacts →
	Indirect evidence “BI.ZONE is an expert in digital risks management that helps organizations develop their businesses safely in cyberspace.” Source: RevenueBase Database · checked Sep 28, 2026
17	Security Risk Advisors	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	201-500	315 contacts →
	Partial evidence “We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Source: RevenueBase Database · checked Sep 28, 2026
18	Ebryx Pvt. LTD	Partial evidence	Lahore, PakistanHQ checked Sep 28, 2026	201-500	300 contacts →
	Partial evidence “With over a decade of experience in providing cybersecurity consulting, Managed Security Service Provider (MSSP) operations, and custom engineering services, Ebryx serves multiple…” Source: RevenueBase Database · checked Sep 28, 2026
19	Neverhack Italy	Partial evidence	Roma, ItalyHQ checked Sep 28, 2026	1,001-5,000	292 contacts →
	Partial evidence “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: RevenueBase Database · checked Sep 28, 2026
20	Secureyes	Partial evidence	Bangalore, IndiaHQ checked Sep 28, 2026	201-500	270 contacts →
	Partial evidence “SecurEyes is a global cybersecurity specialist firm offering advisory plus consulting services and reg-tech products solving for cybersecurity challenges so that business leaders…” Source: RevenueBase Database · checked Sep 28, 2026
21	V360 Group	Indirect evidence	Okhla, IndiaHQ checked Sep 28, 2026	201-500	267 contacts →
	Indirect evidence “Value 360 Communications is India’s first PR Company with a focussed approach for early stage business.” Source: RevenueBase Database · checked Sep 28, 2026
22	Lumifi	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 28, 2026	51-200	249 contacts →
	Indirect evidence “Lumifi Cyber helps organizations illuminate their cyber defense with continuous protection across the full security lifecycle.” Source: RevenueBase Database · checked Sep 28, 2026
23	Sygnia	Indirect evidence	Tel Aviv, IsraelHQ checked Sep 28, 2026	201-500	249 contacts →
	Indirect evidence “Sygnia is a cyber technology and services company, providing high-end consulting and incident response support for organizations worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
24	Fox-It	Indirect evidence	Rijswijk, NetherlandsHQ checked Sep 28, 2026	201-500	233 contacts →
	Indirect evidence “Fox-IT prevents, solves and mitigates the most serious cyber threats with innovative solutions for government, defense, law enforcement, critical infrastructure, banking, and…” Source: RevenueBase Database · checked Sep 28, 2026
25	EYE Security	Indirect evidence	Den Haag, NetherlandsHQ checked Sep 28, 2026	201-500	217 contacts →
	Indirect evidence “Eye Security protects small and medium-sized European enterprises from cyber threats and the high costs that follow after a successful attack.” Source: RevenueBase Database · checked Sep 28, 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 public relations agencies. 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 public relations agencies.
Partial evidence: Its own public description names part of cybersecurity public relations agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity public relations agencies. 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 6,844 cybersecurity public relations agencies worldwide

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Cybersecurity public relations agencies worldwide at a glance

As of Sep 28, 2026

32.0%Verified-email coverage

9.3Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

4,259

11-50

2,054

51-200

413

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 public relations agencies, 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.
Coverage: Every country. Country and city lists for cybersecurity public relations agencies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cybersecurity public relations agencies”. 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 public relations agencies), 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 public relations agencies, and records with no verified work email.
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, 20,331 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 28, 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 public relations agencies by location

55 lists · largest first

Every Cybersecurity public relations agencies 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 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 public relations agencies, 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 public relations agencies are there worldwide?

RevenueBase identified 6,844 cybersecurity public relations agencies worldwide 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?

Adfactors PR, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most cybersecurity public relations agencies?

The United States leads with 1,943 companies, followed by India (471) and the United Kingdom (465). Every cybersecurity public relations agencies list by country and city is linked on this page.

Which city has the most cybersecurity public relations agencies?

London leads with 192 headquartered companies, followed by New York (104) and Paris (85).

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 20,331 verified decision-maker contacts tracked across these 6,844 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 28, 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.