Computer and Network Security Company Search & Contact Data | LeadIQ

Learn more at LeadIQ.com

List of Computer and Network Security Companies

Selling into Computer and Network Security? Here are its companies, biggest first, including Palo Alto Networks, Fortinet and CrowdStrike. Open a company to see its revenue range, headcount, tech stack and the people to contact.

Company NameIndustryLocationFundingRevenueEmployees

Palo Alto Networks

Computer and Network Security

United States, California, Santa Clara

$65M

$1B - $10B

23K

Fortinet

Computer and Network Security

United States, California, Sunnyvale

$89M

$1B - $10B

17K

CrowdStrike

Computer and Network Security

United States, California, Sunnyvale

$1.2B

$1B - $10B

12K

BT Counterpane

Computer & Network Security

<$1M

10K

CenturyLink (Formerly Savvis Inc.)

Computer & Network Security

United States, Louisiana, Monroe

$1M - $10M

10K

FusionX Advanced Adversary Team

Computer and Network Security

United States, Virginia, Arlington

$1M - $10M

10K

Global Information Security - Oshkosh Corporation

Computer & Network Security

United States, Wisconsin, Oshkosh

<$1M

10K

Leidos Cyber

Computer & Network Security

United States, Massachusetts, Foxborough

<$1M

10K

Simility, A PayPal Service

Computer and Network Security

United States, California, San Jose

$25M

$1M - $10M

10K

Verizon Enterprise Services

Computer and Network Security

United States, Michigan, Southfield

$25M - $50M

10K

Zscaler

Computer and Network Security

United States, California, San Jose

$1.7B

$1B - $10B

9.1K

Check Point Software

Computer and Network Security

United States, California, Redwood City

$1.8B

$1B - $10B

8.6K

Cloudflare

Computer and Network Security

United States, California, San Francisco

$10B+

8.3K

TrendAI

Computer and Network Security

Japan, Tokio, Yoyogi

$1B - $10B

8.1K

Okta

Computer and Network Security

United States, California, San Francisco

$1.2B

$1B - $10B

7.8K

HackerOne

Computer and Network Security

United States, California, San Francisco

$159M

$1B - $10B

7.1K

McAfee

Computer and Network Security

United States, California, Sunnyvale

$1B - $10B

5.6K

Proofpoint

Computer and Network Security

United States, California, Sunnyvale

$886M

$1B - $10B

5.2K

Fortinet, Inc.

Computer & Network Security

United States, California, Sunnyvale

$10M - $25M

5K

Kaspersky

Computer and Network Security

Switzerland, Zurich, Zürich

$10B+

4.6K

Bugcrowd

Computer and Network Security

United States, California, San Francisco

$231M

$1B - $10B

3.8K

Trellix

Computer and Network Security

United States, Texas, Plano

$35M

$1B - $10B

3.8K

Rapid7

Computer and Network Security

United States, Massachusetts, Boston

$351M

$1B - $10B

3.7K

SentinelOne

Computer and Network Security

United States, California, Mountain View

$697M

$1B - $10B

3.7K

Qualys

Computer and Network Security

United States, California, Foster City

$34M

$500M - $1B

3.7K

TryHackMe

Computer and Network Security

United Kingdom, England, London

$250M - $500M

3.5K

Netskope

Computer and Network Security

United States, California, Santa Clara

$1.4B

$1B - $10B

3.4K

Infoblox

Computer and Network Security

United States, California, Santa Clara

$53M

$1B - $10B

3.4K

Arctic Wolf

Computer and Network Security

United States, Minnesota, Eden Prairie

$899M

$1B - $10B

3.3K

1Password

Computer and Network Security

Canada, Ontario, North York

$1B

$1B - $10B

3.2K

Wiz

Computer and Network Security

United States, New York, New York

$2B

$1B - $10B

3.2K

Exclusive Networks

Computer and Network Security

France, Île-de-France, Paris

$71M

$500M - $1B

3.1K

RSA Security

Computer and Network Security

United States, Massachusetts, Burlington

$1B - $10B

2.8K

AMI

Computer and Network Security

United States, Georgia, Duluth

$1B - $10B

2.7K

KnowBe4

Computer and Network Security

United States, Florida, Clearwater

$2.2B

$1B - $10B

2.6K

Darktrace

Computer and Network Security

United Kingdom, England, Cambridge

$231M

$1B - $10B

2.6K

Mimecast

Computer and Network Security

United Kingdom, England, London

$90M

$1B - $10B

2.4K

Tanium

Computer and Network Security

United States, Washington, Kirkland

$1B

$1B - $10B

2.4K

Tenable

Computer and Network Security

United States, Maryland, Columbia

$574M

$500M - $1B

2.4K

Hack The Box

Computer and Network Security

United Kingdom, England, Folkestone

$70M

$250M - $500M

2.3K

Barracuda

Computer and Network Security

United States, California, Campbell

$46M

$10B+

2.3K

N-able

Computer and Network Security

United States, North Carolina, Morrisville

$225M

$1B - $10B

2.3K

Optiv

Computer and Network Security

United States, Colorado, Denver

$1B - $10B

2.2K

Snyk

Computer and Network Security

United States, Massachusetts, Boston

$1.2B

$1B - $10B

2K

SonicWall

Computer and Network Security

United States, California, Milpitas

$55M

$1B - $10B

2K

DigiCert

Computer and Network Security

United States, Utah, Lehi

$9.3M

$1B - $10B

1.9K

F-Secure Corporation

Computer and Network Security

Finland, Southwest Finland, Helsinki

$40M

$1B - $10B

1.8K

SANS Institute

Computer and Network Security

United States, Maryland, Rockville

$500M - $1B

1.8K

Cato Networks

Computer and Network Security

Israel, Tel Aviv

$1.2B

$1B - $10B

1.8K

Cyera

Computer and Network Security

United States, New York, New York

$2.8B

$1B - $10B

1.6K

EC-Council

Computer and Network Security

United States, New Mexico, Albuquerque

$250M - $500M

1.6K

Radware

Computer and Network Security

Israel, Tel Aviv, Tel Aviv-yafo

$250M - $500M

1.6K

Abnormal AI

Computer and Network Security

United States, Nevada, Las Vegas

$534M

$1B - $10B

1.6K

Thales Cybersecurity Products

Computer and Network Security

United States, Texas, Austin

$1M

$10B+

1.5K

Mandiant (part of Google Cloud)

Computer and Network Security

United States, California, Mountain View

$70M

$500M - $1B

1.5K

Nile

Computer and Network Security

United States, California, San Jose

$300M

$1B - $10B

1.4K

Forescout Technologies Inc.

Computer and Network Security

United States, California, San Jose

$126M

$1B - $10B

1.3K

ISC2

Computer and Network Security

United States, Virginia, Alexandria

$1B - $10B

1.3K

Absolute Security

Computer and Network Security

United States, Washington, Seattle

$1B - $10B

1.3K

Imperva

Computer and Network Security

United States, Texas, Austin

$94M

$1B - $10B

1.2K

WatchGuard Technologies

Computer and Network Security

United States, Washington, Seattle

$1B - $10B

1.2K

OPSWAT

Computer and Network Security

United States, Florida, Tampa

$125M

$500M - $1B

1.2K

Recorded Future

Computer and Network Security

United States, Massachusetts, Somerville

$79M

$500M - $1B

1.2K

OffSec

Computer and Network Security

United States, New York, New York

$500M - $1B

1.1K

ReliaQuest

Computer and Network Security

United States, Florida, Tampa

$830M

$500M - $1B

1.1K

NASK

Computer and Network Security

Poland, Masovian, Warsaw

$50M - $100M

1.1K

[redacted]

Computer and Network Security

United States, Texas, Austin

$60M

$250M - $500M

1.1K

SISA

Computer and Network Security

India, Karnataka, Bangalore

$50M - $100M

1.1K

AT&T Cybersecurity

Computer and Network Security

United States, Texas, Dallas

$118M

$250M - $500M

1K

Allied Digital

Computer & Network Security

United States, California, Torrance

<$1M

1K

Check Point Software Technologies- NYC

Computer & Network Security

United States, New York, New York

<$1M

1K

Ermetic

Computer and Network Security

Israel, Tel Aviv

$97M

$10M - $25M

1K

FireEye Cyber Security Intelligence

Computer & Network Security

$1M - $10M

1K

Imperva Incapsula

Computer & Network Security

United States, California, Redwood Shores

$25M - $50M

1K

Kratos SecureInfo

Computer & Network Security

United States, Virginia, Chantilly

$50M - $100M

1K

McAfee Security

Computer & Network Security

$1B - $10B

1K

NTT Security

Computer & Network Security

Germany, Bavaria, Ismaning

$1M - $10M

1K

Ultra Electronics, 3eTI (Formerly Criticom)

Computer & Network Security

United States, Maryland, Rockville

$25M - $50M

1K

Checkmarx

Computer and Network Security

United States, New Jersey, Ridgewood

$92M

$500M - $1B

999

Infinigate Group

Computer and Network Security

Switzerland, Zug, Rotkreuz

$25M - $50M

995

secunet Security Networks AG

Computer and Network Security

Germany, North Rhine-Westphalia, Essen

$100M - $250M

985

Armis

Computer and Network Security

United States, California, San Francisco

$1.3B

$1B - $10B

977

Huntress

Computer and Network Security

United States, Maryland, Columbia

$310M

$1B - $10B

968

Cyderes

Computer and Network Security

United States, Missouri, Kansas City

$1B - $10B

946

Illumio

Computer and Network Security

United States, California, Sunnyvale

$558M

$1B - $10B

936

Secureworks

Computer and Network Security

United States, Georgia, Atlanta

$84M

$500M - $1B

933

Ensign InfoSecurity

Computer and Network Security

Singapore, Central Region, Singapore

$500M - $1B

917

Synack Red Team

Computer and Network Security

United States, Texas, Austin

$250M - $500M

910

Netenrich, Inc.

Computer and Network Security

United States, California, San Jose

$1.6M

$100M - $250M

894

A-LIGN

Computer and Network Security

United States, Florida, Tampa

$55M

$1B - $10B

876

Claroty

Computer and Network Security

United States, New York, New York

$940M

$1B - $10B

862

ANSSI - Agence nationale de la sécurité des systèmes d'information

Computer and Network Security

France, Île-de-France, Paris

$10M - $25M

859

ZeroFox

Computer and Network Security

United States, Maryland, Baltimore

$324M

$1B - $10B

857

Ledger

Computer and Network Security

France, Île-de-France, Paris

$577M

$100M - $250M

820

FireEye, Inc.

Computer and Network Security

United States, California, Milpitas

$1.7B

$500M - $1B

806

Avast

Computer and Network Security

Czech Republic, Prague, Prague

$100M

$1B - $10B

791

Comp S.A.

Computer and Network Security

Poland, Masovian, Warsaw

$500M - $1B

784

Exabeam

Computer and Network Security

United States, Colorado, Broomfield

$391M

$500M - $1B

784

ExtraHop

Computer and Network Security

United States, Washington, Seattle

$162M

$1B - $10B

774

Mitek Systems

Computer and Network Security

United States, California, San Diego

$100M - $250M

773

About Computer and Network Security companies

Which Computer and Network Security companies are listed?

Computer and Network Security companies of every size, from enterprises to startups, sorted by headcount so the biggest accounts come first. Companies on the list include Palo Alto Networks, Fortinet and CrowdStrike. Every company profile gives you revenue range, headcount, headquarters, tech stack and an employee directory with verified emails and phone numbers.

Where are Computer and Network Security companies located?

Computer and Network Security companies are most often headquartered in the United States, the United Kingdom, Israel, Canada, France and Germany.

What technologies do Computer and Network Security companies use?

The tools most often found in the tech stacks of Computer and Network Security companies include WordPress, Amazon Web Services, Microsoft 365, Google Cloud, HubSpot and LinkedIn Ads. Useful if you integrate with, complement or compete with one of them.

How do I reach decision makers at Computer and Network Security companies?

Open a company to see its employee directory and email format, then use LeadIQ to get verified work emails and phone numbers for the people you want to reach and push them straight to your CRM or sequencer.

Insights based on LeadIQ data refreshed in September 2026.

Top companies by employee count

Top companies in United States by employee count Top companies in United Kingdom by employee count Top companies in Canada by employee count Top companies in Germany by employee count Top companies in France by employee count Top companies in Australia by employee count Top companies in Netherlands by employee count Top companies in India by employee count Top companies in Spain by employee count Top companies in Switzerland by employee count Top companies in Sweden by employee count Top companies in Italy by employee count Top companies in Denmark by employee count Top companies in Brazil by employee count Top companies in Ireland by employee count

Ready to create more pipeline?

Get a demo and discover why thousands of SDR and Sales teams trust
LeadIQ to help them build pipeline confidently.

© LeadIQ, Inc. All rights reserved.