Company lists · Data refreshed September 2026

Top 25 Cybersecurity investment firms worldwide

Name: Cybersecurity investment firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,381 companies tracked

RevenueBase identified 3,381 cybersecurity investment firms worldwide as of September 2026 and tracks 37,218 professional contacts across them, including 10,685 with verified work emails. The United States is the largest market and London the largest hub.

This list covers cybersecurity investment firms 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 investment firms 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

3,381Companies

37,218Contacts tracked

10,685Verified emails

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The 25 largest cybersecurity investment firms worldwide

Ranked by team size

Top 25 of 3,381 cybersecurity investment firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity investment 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	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
2	SISA	Partial evidence	Bengaluru, IndiaHQ checked Sep 28, 2026	201-500	743 contacts →
	Partial evidence “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Source: RevenueBase Database · checked Sep 28, 2026
3	Fireeye, INC	Indirect evidence	Milpitas, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	676 contacts →
	Indirect evidence “We are now officially Trellix!” Source: RevenueBase Database · checked Sep 28, 2026
4	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
5	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
6	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
7	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
8	G Data Cyberdefense	Indirect evidence	Bochum, GermanyHQ checked Sep 28, 2026	501-1,000	386 contacts →
	Indirect evidence “Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Source: RevenueBase Database · checked Sep 28, 2026
9	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
10	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
11	Cyberani By Aramco Digital	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	201-500	241 contacts →
	Indirect evidence “Cyberani is an Aramco Digital company that is dedicated to safeguarding the digital frontiers of industry leaders and government agencies.” Source: RevenueBase Database · checked Sep 28, 2026
12	Trillium Information Security Systems	Partial evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	51-200	239 contacts →
	Partial evidence “Trillium Information Security Systems (TISS) is a leading global provider of cybersecurity solutions and services, established in 2005.” Source: RevenueBase Database · checked Sep 28, 2026
13	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
14	Vehere	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	201-500	211 contacts →
	Indirect evidence “Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Source: RevenueBase Database · checked Sep 28, 2026
15	Cuatroochenta	Indirect evidence	Castellón, SpainHQ checked Sep 28, 2026	201-500	202 contacts →
	Indirect evidence “Cuatroochenta es un grupo tecnológico internacional dedicado a adquirir, desarrollar e invertir en compañías innovadoras de tecnología, conocimiento especializado y ciberseguridad.” Source: RevenueBase Database · checked Sep 28, 2026
16	Team8	Indirect evidence	Tel Aviv, IsraelHQ checked Sep 28, 2026	51-200	202 contacts →
	Indirect evidence “Team8 is a global venture group with deep domain expertise that creates companies and invests in companies specializing in enterprise technologies, cyber, AI, fintech and digital…” Source: RevenueBase Database · checked Sep 28, 2026
17	Census	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	194 contacts →
	Partial evidence “CENSUS is a cybersecurity engineering powerhouse.” Source: RevenueBase Database · checked Sep 28, 2026
18	Deepseas	Indirect evidence	Globally Distributed, United StatesHQ checked Sep 28, 2026	201-500	182 contacts →
	Indirect evidence “With 30 years of experience in cyber defense, DeepSeas is trusted by nearly clients around the world, including Fortune 100 enterprises and mid-market organizations, municipality…” Source: RevenueBase Database · checked Sep 28, 2026
19	Sdad Technology Pvt. LTD	Indirect evidence	Noida, IndiaHQ checked Sep 28, 2026	201-500	181 contacts →
	Indirect evidence “SDAD Technology Pvt.Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
20	Cyber Advisors	Indirect evidence	Maple Grove, MN, United StatesHQ checked Sep 28, 2026	201-500	176 contacts →
	Indirect evidence “Cyber Advisors is a nationwide leader in cyber security, providing a comprehensive range of Offensive, Defensive, and Risk Management services.” Source: RevenueBase Database · checked Sep 28, 2026
21	Stratascale	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 28, 2026	201-500	171 contacts →
	Partial evidence “Stratascale is a premier services company proudly operating as the cybersecurity division of SHI.” Source: RevenueBase Database · checked Sep 28, 2026
22	Defendedge	Partial evidence	Elmhurst, IL, United StatesHQ checked Sep 28, 2026	51-200	167 contacts →
	Partial evidence “DefendEdge is a leading US-based cybersecurity firm specializing in protecting clients' firewalls, endpoints, and applications against cyber threats and vulnerabilities.” Source: RevenueBase Database · checked Sep 28, 2026
23	Security Matterz	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	201-500	167 contacts →
	Indirect evidence “Security Matterz is Saudi's top specialist IT Security organization, which has its headquarters in Riyadh, Saudi Arabia with branch offices throughout the Middle East.” Source: RevenueBase Database · checked Sep 28, 2026
24	Merlin Cyber	Strong evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	160 contacts →
	Strong evidence “Merlin is a powerful ecosystem of cybersecurity investment, innovation, technical expertise, and go-to-market acceleration with 25 years of experience working with the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
25	Performanta	Partial evidence	Maidenhead, United KingdomHQ checked Sep 28, 2026	51-200	156 contacts →
	Partial evidence “Performanta is a global cybersecurity and data risk management company dedicated to protecting people where data matters most.” 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 investment firms. 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 investment firms.
Partial evidence: Its own public description names part of cybersecurity investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity investment firms. 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 3,381 cybersecurity investment firms worldwide

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Cybersecurity investment firms worldwide at a glance

As of Sep 28, 2026

28.7%Verified-email coverage

11.0Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,915

11-50

1,129

51-200

258

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 investment 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.
Coverage: Every country. Country and city lists for cybersecurity investment firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cybersecurity investment 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 cybersecurity investment 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 cybersecurity investment firms, 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, 10,685 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 investment firms by location

26 lists · largest first

Every Cybersecurity investment 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 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 investment 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 cybersecurity investment firms are there worldwide?

RevenueBase identified 3,381 cybersecurity investment firms 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?

Guidepoint Security, headquartered in Reston, tops this list with the largest team on record.

Which country has the most cybersecurity investment firms?

The United States leads with 1,045 companies, followed by India (282) and the United Kingdom (174). Every cybersecurity investment firms list by country and city is linked on this page.

Which city has the most cybersecurity investment firms?

London leads with 85 headquartered companies, followed by New York (45) and Dubai (39).

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 10,685 verified decision-maker contacts tracked across these 3,381 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.