Company lists · Data refreshed September 2026

Top 25 Insider threat consulting firms worldwide

Name: Insider threat consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 9,887 companies tracked

RevenueBase identified 9,887 insider threat consulting firms worldwide as of September 2026 and tracks 112,123 professional contacts across them, including 26,397 with verified work emails. The United States is the largest market and London the largest hub.

This list covers insider threat consulting 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 insider threat consulting 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

9,887Companies

112,123Contacts tracked

26,397Verified emails

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The 25 largest insider threat consulting firms worldwide

Ranked by team size

Top 25 of 9,887 insider threat consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to insider threat consulting 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	Private Sector	Indirect evidence	United StatesHQ checked Sep 28, 2026	n/a	12,771 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
2	Bugcrowd	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	n/a	3,649 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 28, 2026
3	OPTIV	Indirect evidence	Leawood, KS, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,222 contacts →
	Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 28, 2026
4	Systems Planning & Analysis	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,092 contacts →
	Indirect evidence “Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.” Source: RevenueBase Database · checked Sep 28, 2026
5	Site سايت	Indirect evidence	Al Nakheel, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	1,378 contacts →
	Indirect evidence “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Source: RevenueBase Database · checked Sep 28, 2026
6	First Security Group LLC	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 28, 2026	5,001-10,000	1,374 contacts →
	Indirect evidence “First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Source: RevenueBase Database · checked Sep 28, 2026
7	Guidepoint Security	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,232 contacts →
	Indirect 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
8	Brosnan Risk Consultants	Indirect evidence	Pearl River, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,050 contacts →
	Indirect evidence “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Source: RevenueBase Database · checked Sep 28, 2026
9	Recorded Future	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	501-1,000	1,030 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
10	Zerofox	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 28, 2026	501-1,000	904 contacts →
	Partial evidence “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Source: RevenueBase Database · checked Sep 28, 2026
11	Exabeam	Indirect evidence	Broomfield, CO, United StatesHQ checked Sep 28, 2026	501-1,000	876 contacts →
	Indirect evidence “Exabeam is the leader in Behavior Intelligence for the agentic enterprise.” Source: RevenueBase Database · checked Sep 28, 2026
12	AEGIS	Indirect evidence	United StatesHQ checked Sep 28, 2026	1,001-5,000	781 contacts →
	Indirect evidence “AEGIS is a London based, privately owned, British security and risk management company with overseas offices in Afghanistan, Bahrain, Iraq and the USA.” Source: RevenueBase Database · checked Sep 28, 2026
13	PSU	Indirect evidence	Beijing, ChinaHQ checked Sep 28, 2026	n/a	771 contacts →
	Indirect evidence “Since 2006, PSU has been the leading Scandinavian risk and security consultancy in China.” Source: RevenueBase Database · checked Sep 28, 2026
14	MSA Security	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	10001+	571 contacts →
	Partial evidence “Allied Universal Enhanced Protection Services delivers unrivaled threat mitigation expertise for government and business entities worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
15	Security Alliance	Indirect evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	553 contacts →
	Indirect evidence “Security Alliance is a highly experienced provider of security solutions for private and business environments.” Source: RevenueBase Database · checked Sep 28, 2026
16	Group-Ib	Indirect evidence	SingaporeHQ checked Sep 28, 2026	501-1,000	528 contacts →
	Indirect evidence “Founded in 2003 and headquartered in Singapore, Group-IB is a leading creator of cybersecurity technologies to investigate, prevent, and fight digital crime.” Source: RevenueBase Database · checked Sep 28, 2026
17	own.security	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	506 contacts →
	Indirect 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
18	Securityhq	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	502 contacts →
	Indirect evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 28, 2026
19	Palo Alto Networks Unit 42	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	441 contacts →
	Partial evidence “Palo Alto Networks Unit 42 brings together world-renowned threat researchers with an elite team of incident responders and security consultants to create an intelligence-driven…” Source: RevenueBase Database · checked Sep 28, 2026
20	United Security, Inc. USI	Indirect evidence	Red Bank, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	416 contacts →
	Indirect evidence “United Security Inc.(USI) provides personalized security solutions enhanced by advanced technology and cyber services.” Source: RevenueBase Database · checked Sep 28, 2026
21	Kudelski Security	Indirect evidence	Cheseaux, United StatesHQ checked Sep 28, 2026	201-500	392 contacts →
	Indirect evidence “Kudelski Security is a premier cybersecurity solutions provider, working with the most security-conscious organizations in Europe and across the United States.” Source: RevenueBase Database · checked Sep 28, 2026
22	Esec Forte Technologies	Partial evidence	Gurugram, IndiaHQ checked Sep 28, 2026	201-500	363 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
23	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
24	Norred & Associates, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	501-1,000	340 contacts →
	Indirect evidence “A full-service firm with the proven capabilities to manage all facets of your company’s security requirements, Norred & Associates, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
25	Sentar INC	Indirect evidence	Huntsville, AL, United StatesHQ checked Sep 28, 2026	201-500	338 contacts →
	Indirect evidence “Sentar, an employee-owned company, is a leading cyber-intelligence solutions provider focused on the National Security sector.” 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: insider threat consulting 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 insider threat consulting firms.
Partial evidence: Its own public description names part of insider threat consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insider threat consulting 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 9,887 insider threat consulting firms worldwide

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Insider threat consulting firms worldwide at a glance

As of Sep 28, 2026

23.5%Verified-email coverage

11.3Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

6,128

11-50

2,748

51-200

753

201-500

151

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 insider threat consulting 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 insider threat consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “insider threat consulting 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 insider threat consulting 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 insider threat consulting 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, 26,397 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.

Insider threat consulting firms by location

64 lists · largest first

Every Insider threat consulting 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 insider threat consulting 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 insider threat consulting firms are there worldwide?

RevenueBase identified 9,887 insider threat consulting 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?

Private Sector, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most insider threat consulting firms?

The United States leads with 3,118 companies, followed by the United Kingdom (619) and India (383). Every insider threat consulting firms list by country and city is linked on this page.

Which city has the most insider threat consulting firms?

London leads with 271 headquartered companies, followed by Paris (126) and Sao Paulo (112).

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 26,397 verified decision-maker contacts tracked across these 9,887 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.