Company lists · Data refreshed September 2026

Top 25 Federal security assessment firms worldwide

Name: Federal security assessment firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 4,744 companies tracked

RevenueBase identified 4,744 federal security assessment firms worldwide as of September 2026 and tracks 65,672 professional contacts across them, including 14,986 with verified work emails. The United States is the largest market and London the largest hub.

This list covers federal security assessment 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 federal security assessment 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

4,744Companies

65,672Contacts tracked

14,986Verified emails

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The 25 largest federal security assessment firms worldwide

Ranked by team size

Top 25 of 4,744 federal security assessment firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to federal security assessment 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	Paragon Systems INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	10001+	1,949 contacts →
	Partial evidence “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: RevenueBase Database · checked Sep 28, 2026
3	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
4	Network Intelligence	Partial evidence	Plano, TX, United StatesHQ checked Sep 28, 2026	501-1,000	641 contacts →
	Partial evidence “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Source: RevenueBase Database · checked Sep 28, 2026
5	Telos Corporation	Partial evidence	Ashburn, VA, United StatesHQ checked Sep 28, 2026	501-1,000	629 contacts →
	Partial evidence “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Source: RevenueBase Database · checked Sep 28, 2026
6	Sirar By STC	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	201-500	493 contacts →
	Indirect evidence “World-class leading edge cyber capabilities to enable and protect economic and physical critical infrastructure and government services.” Source: RevenueBase Database · checked Sep 28, 2026
7	Aujas Cybersecurity	Indirect evidence	Cupertino, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	473 contacts →
	Indirect evidence “At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Source: RevenueBase Database · checked Sep 28, 2026
8	Safeway	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	201-500	399 contacts →
	Indirect evidence “A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.” Source: RevenueBase Database · checked Sep 28, 2026
9	Acpl Systems	Partial evidence	Gurgaon, IndiaHQ checked Sep 28, 2026	201-500	398 contacts →
	Partial evidence “ACPL Systems is a pure-play cybersecurity services company focused on helping organisations translate security investments into measurable outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
10	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
11	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
12	Techdefence	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 28, 2026	201-500	340 contacts →
	Indirect evidence “TechDefence Labs (TechD Cybersecurity Limited) Award-winning \| Innovative \| Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Source: RevenueBase Database · checked Sep 28, 2026
13	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
14	Nviso Security	Partial evidence	Brussels, BelgiumHQ checked Sep 28, 2026	201-500	315 contacts →
	Partial evidence “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Source: RevenueBase Database · checked Sep 28, 2026
15	Feditc	Partial evidence	Rockville, MD, United StatesHQ checked Sep 28, 2026	201-500	296 contacts →
	Partial evidence “Founded in 2003, FEDITC, LLC is an ISO and CMMI level 3 certified cyber security, IT, and engineering services firm.” Source: RevenueBase Database · checked Sep 28, 2026
16	Prescient Security	Partial evidence	Nashville, TN, United StatesHQ checked Sep 28, 2026	201-500	272 contacts →
	Partial evidence “Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.” Source: RevenueBase Database · checked Sep 28, 2026
17	Secureyes	Indirect evidence	Bangalore, IndiaHQ checked Sep 28, 2026	201-500	270 contacts →
	Indirect 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
18	Baxter Clewis Cybersecurity	Indirect evidence	Cedar Hill, TX, United StatesHQ checked Sep 28, 2026	201-500	255 contacts →
	Indirect evidence “Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.” Source: RevenueBase Database · checked Sep 28, 2026
19	Meta Infotech Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	201-500	238 contacts →
	Partial evidence “Established 26 years ago, Meta Infotech has been a trusted name in Cyber and IT Risk Assessment Services, Cybersecurity Product Consulting, Implementation & Sustenance Services…” Source: RevenueBase Database · checked Sep 28, 2026
20	Sawdey Solution Services	Indirect evidence	Beavercreek, OH, United StatesHQ checked Sep 28, 2026	201-500	234 contacts →
	Indirect evidence “For over 20 years, Sawdey Solutions Services has provided both Government and commercial clients with innovative cross-disciplined professional services that aim not only to…” Source: RevenueBase Database · checked Sep 28, 2026
21	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
22	Oplium	Partial evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	201-500	230 contacts →
	Partial evidence “We are a young company, founded in 2019 in Brazil, with the aim of bringing an innovative approach to the information security market, with state-of-the-art proprietary and…” Source: RevenueBase Database · checked Sep 28, 2026
23	Cyraacs	Indirect evidence	Bengaluru, IndiaHQ checked Sep 28, 2026	51-200	221 contacts →
	Indirect evidence “CYRAAC Services Private Limited (CyRAACS) is a leading, technology-first cybersecurity consulting and advisory firm headquartered in India, empanelled with CERT-In and accredited…” Source: RevenueBase Database · checked Sep 28, 2026
24	Cybergate Defense	Partial evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 28, 2026	51-200	217 contacts →
	Partial evidence “CyberGate is an Emirati establishment founded to provide Cybersecurity services that would improve the overarching security posture of governments and organizations.” Source: RevenueBase Database · checked Sep 28, 2026
25	TCM Security	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 28, 2026	n/a	206 contacts →
	Partial evidence “A veteran-owned cybersecurity company focused on penetration testing, security training, and compliance.” 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: federal security assessment 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 federal security assessment firms.
Partial evidence: Its own public description names part of federal security assessment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name federal security assessment 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 4,744 federal security assessment firms worldwide

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Federal security assessment firms worldwide at a glance

As of Sep 28, 2026

22.8%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

1.9%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,733

11-50

1,556

51-200

351

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 federal security assessment 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 federal security assessment firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “federal security assessment 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 federal security assessment 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 federal security assessment 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, 14,986 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.

Federal security assessment firms by location

35 lists · largest first

Every Federal security assessment 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 federal security assessment 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 federal security assessment firms are there worldwide?

RevenueBase identified 4,744 federal security assessment 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 federal security assessment firms?

The United States leads with 1,460 companies, followed by India (457) and the United Kingdom (261). Every federal security assessment firms list by country and city is linked on this page.

Which city has the most federal security assessment firms?

London leads with 92 headquartered companies, followed by Paris (47) and Hyderabad (42).

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 14,986 verified decision-maker contacts tracked across these 4,744 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.