Company lists · Data refreshed September 2026

Top 25 Siem software companies worldwide

RevenueBase identified 139 siem software companies worldwide as of September 2026 and tracks 7,941 professional contacts across them, including 3,651 with verified work emails. The United States is the largest market and London the largest hub.

This list covers siem software 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 siem software 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
139Companies
7,941Contacts tracked
3,651Verified emails
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The 25 largest siem software companies worldwide

Ranked by team size
Top 25 of 139 siem software companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to siem software 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 evidenceMountain View, CA, United StatesHQ checked Sep 29, 20261,001-5,0003,052 contacts →

Indirect evidence

“SentinelOne is the world's leading AI-powered cybersecurity platform.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceRedwood City, CA, United StatesHQ checked Sep 29, 2026501-1,000828 contacts →

Indirect evidence

“Sumo Logic helps make the digital world secure, fast, and reliable by unifying critical security and operational data through its Intelligent Operations Platform.”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidencePlano, TX, United StatesHQ checked Sep 29, 2026501-1,000712 contacts →

Indirect evidence

“Securonix is transforming how security operations are delivered, measured, and scaled.”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceColumbia, MD, United StatesHQ checked Sep 29, 2026501-1,000696 contacts →

Indirect evidence

“Protect Your Endpoints, Identities, Logs, and Employees.”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceEl Segundo, CA, United StatesHQ checked Sep 29, 2026201-500325 contacts →

Indirect evidence

“Gurucul is a security analytics company founded in data science that delivers radical clarity about cyber risk.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceCampbell, CA, United StatesHQ checked Sep 29, 2026201-500251 contacts →

Partial evidence

“Wazuh is a free and open-source security platform that unifies XDR and SIEM capabilities.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceCopenhagen, DenmarkHQ checked Sep 29, 2026201-500218 contacts →

Indirect evidence

“Logpoint safeguards society in a digital world by helping customers and Managed Security Service Providers (MSSPs) detect cyberattacks.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 29, 202651-200133 contacts →

Indirect evidence

“By shining a bright light on the darkest corners of security operations, Stellar Cyber empowers organizations to see incoming attacks, know how to fight them, and act decisively –…”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceKathmandu, NepalHQ checked Sep 29, 2026201-500121 contacts →

Indirect evidence

“Vairav Technology is a dedicated Cyber Defender, delivering cutting-edge solutions that proactively monitor, detect, and neutralize cyber threats in real-time.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceHouston, TX, United StatesHQ checked Sep 29, 202651-200110 contacts →

Indirect evidence

“Graylog: Empowering Threat Detection & Incident Response Solutions with Cutting-Edge Technology At Graylog, we specialize in delivering top-notch Threat Detection & Incident…”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceTel Aviv, IsraelHQ checked Sep 29, 202651-20098 contacts →

Partial evidence

“Hunters is a Human-Driven, AI-Powered 'Next-Gen' SIEM that revolutionizes the way SOCs operate.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceAnn Arbor, MI, United StatesHQ checked Sep 29, 202651-20077 contacts →

Indirect evidence

“Blumira's mission is to make enterprise-grade security accessible to organizations of all sizes.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceAlfragide, PortugalHQ checked Sep 29, 202611-5056 contacts →

Indirect evidence

“CyberSafe is a Portuguese company focused on cybersecurity.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidencePalo Alto, United StatesHQ checked Sep 29, 202651-20054 contacts →

Indirect evidence

“Put your team’s focus back on catching attackers and let Abstract handle the heavy lifting of security data management.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202651-20054 contacts →

Indirect evidence

“SenseOn deploys alongside all of your existing tools, unifying them into a single investigation plane and augmenting your team with cross-domain correlation, analytics, and…”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceAshburn, VA, United StatesHQ checked Sep 29, 202651-20051 contacts →

Indirect evidence

“ThreatQuotient improves security operations by fusing together disparate data sources, tools and teams to accelerate threat detection, investigation and response (TDIR).”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial evidence141 Omonoias Avenue, United StatesHQ checked Sep 29, 202651-20049 contacts →

Partial evidence

“Cognyte (formerly a Verint company) is a global leader in security analytics software that empowers governments and enterprises with Actionable Intelligence for a safer world.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceZürich, SwitzerlandHQ checked Sep 29, 202651-20045 contacts →

Indirect evidence

“Our AI-powered security analytics products provide deep visibility, detect the most advanced cyber threats in real-time and enable fast mitigation.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceAlgiers, AlgeriaHQ checked Sep 29, 202611-5040 contacts →

Indirect evidence

“Octodet Security Analytics solutions will help you collect, consolidate and detect threats.”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial evidencePhoenix, AZ, United StatesHQ checked Sep 29, 202651-20038 contacts →

Partial evidence

“ArmorPoint redefines the traditional approach to cybersecurity by combining network operations, security operations, and SIEM technology in one platform.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidencePalo Alto, CA, United StatesHQ checked Sep 29, 20261,001-5,00035 contacts →

Indirect evidence

“LogLogic is the provider of industry’s only scalable log and security intelligence platform for the enterprise and cloud.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceMumbai, IndiaHQ checked Sep 29, 202611-5035 contacts →

Indirect evidence

“NETMONASTERY Inc.(NM) is a industry leader in the cyber threat defense space.”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceSão Paulo, BrazilHQ checked Sep 29, 202611-5034 contacts →

Indirect evidence

“The Neotel team experience provided a complete view of the digital security technology industry.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidenceCarlsbad, CA, United StatesHQ checked Sep 29, 202611-5033 contacts →

Partial evidence

“For 40 years, SIMS Software, has been helping security professionals centralize dispersed data sources to achieve operational efficiencies, government compliance, risk mitigation…”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceAnkara, TürkiyeHQ checked Sep 29, 202611-5030 contacts →

Indirect evidence

“Güvenlik Farkındalıkla Başlar (tm)”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 139 siem software companies worldwide

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Siem software companies worldwide at a glance

As of Sep 29, 2026
46.0%Verified-email coverage
57.1Average contacts per company
11-50Median size (employees)
2.9%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
58
51-200
21
201-500
5
501-1,000
5
1,001-5,000
3
10001+
1

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 siem software 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 siem software companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “siem software 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 siem software 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 siem software 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, 3,651 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.

Siem software companies by location

1 lists · largest first

Every Siem software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 siem software 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 siem software companies are there worldwide?

RevenueBase identified 139 siem software 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?

Sentinelone, headquartered in Mountain View, tops this list with the largest team on record.

Which country has the most siem software companies?

The United States leads with 49 companies. Every siem software companies list by country and city is linked on this page.

Which city has the most siem software companies?

London leads with 4 headquartered companies, followed by Palo Alto (3) and Ankara (2).

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 3,651 verified decision-maker contacts tracked across these 139 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.