Company lists · Data refreshed September 2026

Top 25 Security event management companies worldwide

RevenueBase identified 9,774 security event management companies worldwide as of September 2026 and tracks 205,815 professional contacts across them, including 32,162 with verified work emails. The United States is the largest market and London the largest hub.

This list covers security event management companies 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 29, 2026. Country and city lists for security event management companies 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 29, 2026 86% judged on-target in blind review
9,774Companies
205,815Contacts tracked
32,162Verified emails
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The 25 largest security event management companies worldwide

Ranked by team size
Top 25 of 9,774 security event management companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to security event management companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceUnited StatesHQ checked Sep 29, 2026n/a12,771 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceAbingdon, United KingdomHQ checked Sep 29, 20265,001-10,0004,925 contacts →

Indirect evidence

“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceSt. Petersburg, FL, United StatesHQ checked Sep 29, 2026n/a4,038 contacts →

Partial evidence

“Excelsior Defense is a security and investigations company based out of St.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceNorthridge, CA, United StatesHQ checked Sep 29, 202610001+4,025 contacts →

Partial evidence

“Contemporary Services Corporation (CSC) is recognized worldwide as the pioneer, expert and only employee owned company in the crowd management field.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidencePasadena, CA, United StatesHQ checked Sep 29, 202610001+3,612 contacts →

Partial evidence

“EVERYWHERE SECURITY MATTERS.”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceRoswell, GA, United StatesHQ checked Sep 29, 202610001+3,592 contacts →

Indirect evidence

“U.S.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceEden Prairie, MN, United StatesHQ checked Sep 29, 20261,001-5,0003,145 contacts →

Indirect evidence

“Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.”

Source: RevenueBase Database · checked Sep 29, 2026
8Strong evidenceCulver City, CA, United StatesHQ checked Sep 29, 20265,001-10,0002,500 contacts →

Strong evidence

“The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceSão José, BrazilHQ checked Sep 29, 20265,001-10,0002,462 contacts →

Indirect evidence

“A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.”

Source: RevenueBase Database · checked Sep 29, 2026
10Strong evidenceAurora, IL, United StatesHQ checked Sep 29, 20265,001-10,0002,266 contacts →

Strong evidence

“Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.”

Source: RevenueBase Database · checked Sep 29, 2026
11Strong evidenceHerndon, VA, United StatesHQ checked Sep 29, 202610001+1,949 contacts →

Strong 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 29, 2026
12Indirect evidenceDiegem, BelgiumHQ checked Sep 29, 20265,001-10,0001,419 contacts →

Indirect evidence

“See a different world.”

Source: RevenueBase Database · checked Sep 29, 2026
13Strong evidenceVienna, VA, United StatesHQ checked Sep 29, 20261,001-5,0001,381 contacts →

Strong evidence

“Everbridge is the global leader in Critical Event Management, helping over 6,500 organizations worldwide escape the expanding Risk Zone and achieve a true business resilience…”

Source: RevenueBase Database · checked Sep 29, 2026
14Strong evidenceLeicester, United KingdomHQ checked Sep 29, 20261,001-5,0001,265 contacts →

Strong evidence

“With over 45 years of experience, Showsec is a leading name in the UK’s live event security sector.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceGurgaon, IndiaHQ checked Sep 29, 202610001+1,225 contacts →

Partial evidence

“Securitas is the global knowledge leader in Security & loss prevention, with revenues of over $12bn, employing more than people in 44 markets.”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceChicago, IL, United StatesHQ checked Sep 29, 20261,001-5,0001,138 contacts →

Partial evidence

“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 29, 20265,001-10,0001,062 contacts →

Indirect evidence

“Founded in 1982, St.”

Source: RevenueBase Database · checked Sep 29, 2026
18Strong evidencePearl River, NY, United StatesHQ checked Sep 29, 20265,001-10,0001,050 contacts →

Strong 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 29, 2026
19Indirect evidenceMarseille, FranceHQ checked Sep 29, 202610001+1,007 contacts →

Indirect evidence

“La proposition de valeur d'Onet dans la sécurité se fonde sur - son expertise sécurité et sa capacité à analyser les besoins et risques propres à ses clients- sa parfaite maîtrise…”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial evidenceBangalore, IndiaHQ checked Sep 29, 202610001+937 contacts →

Partial evidence

“Founded in 1989, Terrier Security Services is a leading integrated security provider in India, with over guards and 2,480 secured sites.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceBrazilHQ checked Sep 29, 20261,001-5,000934 contacts →

Indirect evidence

“A ENGEFORT tem a missão de prestar serviços de vigilância patrimonial, escolta de veículos, proteção VIP a executivos, artistas e autoridades.”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceMagdalena Del Mar, PeruHQ checked Sep 29, 20261,001-5,000891 contacts →

Partial evidence

“Securitas es socio líder en soluciones de protección inteligente.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceWest Palm Beach, FL, United StatesHQ checked Sep 29, 2026501-1,000849 contacts →

Partial evidence

“Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceKansas City, MO, United StatesHQ checked Sep 29, 20261,001-5,000844 contacts →

Indirect evidence

“Today’s threatscape is relentless.”

Source: RevenueBase Database · checked Sep 29, 2026
25Partial evidenceUniontown, OH, United StatesHQ checked Sep 29, 202610001+839 contacts →

Partial evidence

“Securitas knows Security.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 9,774 security event management companies worldwide

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Security event management companies worldwide at a glance

As of Sep 29, 2026
15.6%Verified-email coverage
21.1Average contacts per company
11-50Median size (employees)
2.0%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
3,405
11-50
3,223
51-200
1,815
201-500
612
501-1,000
272
1,001-5,000
269
5,001-10,000
46
10001+
51

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 security event management companies, 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 security event management companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “security event management companies”. 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 security event management companies), 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 security event management companies, 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, 32,162 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 29, 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.

Security event management companies by location

52 lists · largest first

Every Security event management companies 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 security event management companies, 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 security event management companies are there worldwide?

RevenueBase identified 9,774 security event management companies 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 security event management companies?

The United States leads with 2,206 companies, followed by the United Kingdom (695) and France (568). Every security event management companies list by country and city is linked on this page.

Which city has the most security event management companies?

London leads with 191 headquartered companies, followed by Sao Paulo (121) and Dubai (74).

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 32,162 verified decision-maker contacts tracked across these 9,774 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 29, 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.