Company lists · Data refreshed November 2026
Top 25 Internet security companies based in the United States
RevenueBase identified 9,190 company matches for internet security companies associated with the United States as of November 2026 and tracks 234,071 professional contacts across them, including 98,860 with verified work emails. New York is the largest hub.
This list covers company matches for internet security companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 25 largest internet security companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 15,414 contacts → | ||||
Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 11,878 contacts → | ||||
Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 11,304 contacts → | ||||
Exact match “CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 3,628 contacts → | ||||
Exact match “SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 3,510 contacts → | ||||
Exact match “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 3,342 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 3,323 contacts → | ||||
Exact match “Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 3,154 contacts → | ||||
Exact match “SentinelOne is the world's leading AI-powered cybersecurity platform.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 3,071 contacts → | ||||
Exact match “GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 2,408 contacts → | ||||
Exact match “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 2,171 contacts → | ||||
Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 1,928 contacts → | ||||
Exact match “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 1,901 contacts → | ||||
Exact match “ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 1,770 contacts → | ||||
Exact match “BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 1,691 contacts → | ||||
Exact match “Fortra delivers AI-amplified data security solutions that help organizations use and protect data with confidence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 1,482 contacts → | ||||
Exact match “Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 1,413 contacts → | ||||
Exact match “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 1,346 contacts → | ||||
Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 1,290 contacts → | ||||
Exact match “ReliaQuest exists to Make Security Possible.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 1,236 contacts → | ||||
Exact match “As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 1,192 contacts → | ||||
Exact match “On Dec.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 1,174 contacts → | ||||
Exact match “WatchGuard® Technologies, Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 1,082 contacts → | ||||
Exact match “IT Solutions Technology Partners (ITS) is a trusted managed services provider with 30+ years of experience helping organizations leverage technology as a competitive advantage.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 1,072 contacts → | ||||
Exact match “As an award-winning, global IT solutions provider, we are changing the nature of transformation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 1,017 contacts → | ||||
Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “internet security companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 9,190 internet security companies based in the United States
See the full list, filter by size, metro and specialty, and access 98,860 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Internet security companies based in the United States at a glance
As of Nov 5, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 9,190 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “internet security companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 98,860 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Internet security companies by metro
- Internet security companies in New York310
- Internet security companies in Houston166
- Internet security companies in Austin156
- Internet security companies in Atlanta151
- Internet security companies in Miami148
- Internet security companies in Washington140
- Internet security companies in Chicago126
- Internet security companies in Dallas124
- Internet security companies in Tampa108
- Internet security companies in San Francisco102
- Internet security companies in Los Angeles87
- Internet security companies in San Diego85
- Internet security companies in Phoenix79
- Internet security companies in Denver75
- Internet security companies in Arlington74
- Internet security companies in Charlotte73
- Internet security companies in Las Vegas68
- Internet security companies in Orlando68
- Internet security companies in San Antonio64
- Internet security companies in Columbia62
- Internet security companies in Boston58
- Internet security companies in Reston58
- Internet security companies in Seattle53
- Internet security companies in Alexandria51
- Internet security companies in Fairfax46
- Internet security companies in Irvine45
- Internet security companies in Sheridan45
- Internet security companies in Wilmington45
- Internet security companies in Mclean44
- Internet security companies in Huntsville42
- Internet security companies in Portland42
- Internet security companies in Baltimore41
- Internet security companies in San Jose39
- Internet security companies in Fort Lauderdale38
- Internet security companies in Nashville38
- Internet security companies in Richmond38
- Internet security companies in Plano37
- Internet security companies in Raleigh37
- Internet security companies in Scottsdale36
- Internet security companies in Herndon34
- Internet security companies in Jacksonville33
- Internet security companies in Ashburn32
- Internet security companies in Frisco32
- Internet security companies in Indianapolis32
- Internet security companies in Pittsburgh32
- Internet security companies in St. Louis32
- Internet security companies in Colorado Springs31
- Internet security companies in Alpharetta30
- Internet security companies in Minneapolis30
- Internet security companies in Columbus29
- Internet security companies in Salt Lake City29
- Internet security companies in Birmingham28
- Internet security companies in Dover28
- Internet security companies in Philadelphia27
- Internet security companies in St. Petersburg27
- Internet security companies in Knoxville26
- Internet security companies in Louisville26
- Internet security companies in Cincinnati25
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “internet security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many internet security companies are there based in the United States?
RevenueBase identified 9,190 company matches for internet security companies associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Fortinet tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most internet security companies?
New York leads with 310 company records, followed by Houston (166) and Austin (156).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 98,860 professional contacts with verified work emails tracked across these 9,190 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 9,190 internet security companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Internet security companies by geography
- Internet security companies based in Buenos Aires, Argentina
- Internet security companies based in Adelaide, Australia
- Internet security companies based in Brisbane, Australia
- Internet security companies based in Canberra, Australia
- Internet security companies based in Melbourne, Australia
- Internet security companies based in Perth, Australia
- Internet security companies based in Sydney, Australia
- Internet security companies based in Vienna, Austria
- Internet security companies based in Dhaka, Bangladesh
- Internet security companies based in Barueri, Brazil
- Internet security companies based in Belo Horizonte, Brazil
- Internet security companies based in Brasilia, Brazil
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 SmartSearch, 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.
More company lists
- All company lists
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- Lists A-Z
- New lists
- Internet security companies based in Buenos Aires, Argentina
- Internet security companies based in Adelaide, Australia
- Internet security companies based in Brisbane, Australia
- Internet security companies based in Canberra, Australia
- Internet security companies based in Melbourne, Australia
- Internet security companies based in Perth, Australia
Company intelligence · public preview
Top 25 internet security companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 9,190 matching company records for internet security companies based in the United States, with 234,071 tracked contacts and 98,860 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 internet security companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: Sunnyvale, CA, United StatesReported employees: 10001+ | Sunnyvale, CA, United States | 10001+ | Exact match | 15,414 contacts → |
“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: San Jose, CA, United StatesReported employees: 10001+ | San Jose, CA, United States | 10001+ | Exact match | 11,878 contacts → |
“Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: Remote, United StatesReported employees: 5,001-10,000 | Remote, United States | 5,001-10,000 | Exact match | 11,304 contacts → |
“CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 3,628 contacts → |
“SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: Plano, TX, United StatesReported employees: 1,001-5,000 | Plano, TX, United States | 1,001-5,000 | Exact match | 3,510 contacts → |
“Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 3,342 contacts → |
“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…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Foster City, CA, United StatesReported employees: 1,001-5,000 | Foster City, CA, United States | 1,001-5,000 | Exact match | 3,323 contacts → |
“Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Mountain View, CA, United StatesReported employees: 1,001-5,000 | Mountain View, CA, United States | 1,001-5,000 | Exact match | 3,154 contacts → |
“SentinelOne is the world's leading AI-powered cybersecurity platform.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Arlington, VA, United StatesReported employees: 1,001-5,000 | Arlington, VA, United States | 1,001-5,000 | Exact match | 3,071 contacts → |
“GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Campbell, CA, United StatesReported employees: 1,001-5,000 | Campbell, CA, United States | 1,001-5,000 | Exact match | 2,408 contacts → |
“Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,171 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,928 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Herndon, VA, United StatesReported employees: 1,001-5,000 | Herndon, VA, United States | 1,001-5,000 | Exact match | 1,901 contacts → |
“ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: Johns Creek, GA, United StatesReported employees: 1,001-5,000 | Johns Creek, GA, United States | 1,001-5,000 | Exact match | 1,770 contacts → |
“BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Eden Prairie, MN, United StatesReported employees: 1,001-5,000 | Eden Prairie, MN, United States | 1,001-5,000 | Exact match | 1,691 contacts → |
“Fortra delivers AI-amplified data security solutions that help organizations use and protect data with confidence.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: Huntsville, AL, United StatesReported employees: 10001+ | Huntsville, AL, United States | 10001+ | Exact match | 1,482 contacts → |
“Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 1,413 contacts → |
“Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,346 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Tampa, FL, United StatesReported employees: 1,001-5,000 | Tampa, FL, United States | 1,001-5,000 | Exact match | 1,290 contacts → |
“ReliaQuest exists to Make Security Possible.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: San Jose, CA, United StatesReported employees: 1,001-5,000 | San Jose, CA, United States | 1,001-5,000 | Exact match | 1,236 contacts → |
“As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 1,192 contacts → |
“On Dec.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | HQ: Seattle, WA, United StatesReported employees: 1,001-5,000 | Seattle, WA, United States | 1,001-5,000 | Exact match | 1,174 contacts → |
“WatchGuard® Technologies, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Fort Washington, PA, United StatesReported employees: 501-1,000 | Fort Washington, PA, United States | 501-1,000 | Exact match | 1,082 contacts → |
“IT Solutions Technology Partners (ITS) is a trusted managed services provider with 30+ years of experience helping organizations leverage technology as a competitive advantage.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 1,072 contacts → |
“As an award-winning, global IT solutions provider, we are changing the nature of transformation.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Trevose, PA, United StatesReported employees: 201-500 | Trevose, PA, United States | 201-500 | Exact match | 1,017 contacts → |
“PPC is now part of DSA” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 9,190 company matches
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Internet security companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
9,164 records in the displayed employee bands.
26 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 9,190 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Internet security companies by metro
- Internet security companies in New York310
- Internet security companies in Houston166
- Internet security companies in Austin156
- Internet security companies in Atlanta151
- Internet security companies in Miami148
- Internet security companies in Washington140
- Internet security companies in Chicago126
- Internet security companies in Dallas124
- Internet security companies in Tampa108
- Internet security companies in San Francisco102
- Internet security companies in Los Angeles87
- Internet security companies in San Diego85
- Internet security companies in Phoenix79
- Internet security companies in Denver75
- Internet security companies in Arlington74
- Internet security companies in Charlotte73
- Internet security companies in Las Vegas68
- Internet security companies in Orlando68
- Internet security companies in San Antonio64
- Internet security companies in Columbia62
- Internet security companies in Boston58
- Internet security companies in Reston58
- Internet security companies in Seattle53
- Internet security companies in Alexandria51
- Internet security companies in Fairfax46
- Internet security companies in Irvine45
- Internet security companies in Sheridan45
- Internet security companies in Wilmington45
- Internet security companies in Mclean44
- Internet security companies in Huntsville42
- Internet security companies in Portland42
- Internet security companies in Baltimore41
- Internet security companies in San Jose39
- Internet security companies in Fort Lauderdale38
- Internet security companies in Nashville38
- Internet security companies in Richmond38
- Internet security companies in Plano37
- Internet security companies in Raleigh37
- Internet security companies in Scottsdale36
- Internet security companies in Herndon34
- Internet security companies in Jacksonville33
- Internet security companies in Ashburn32
- Internet security companies in Frisco32
- Internet security companies in Indianapolis32
- Internet security companies in Pittsburgh32
- Internet security companies in St. Louis32
- Internet security companies in Colorado Springs31
- Internet security companies in Alpharetta30
- Internet security companies in Minneapolis30
- Internet security companies in Columbus29
- Internet security companies in Salt Lake City29
- Internet security companies in Birmingham28
- Internet security companies in Dover28
- Internet security companies in Philadelphia27
- Internet security companies in St. Petersburg27
- Internet security companies in Knoxville26
- Internet security companies in Louisville26
- Internet security companies in Cincinnati25
Questions about this company list
What does Exact match mean for internet security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many internet security companies did RevenueBase find based in the United States?
The saved snapshot records 9,190 matching company records, 234,071 tracked contacts and 98,860 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Internet security companies by geography
- Internet security companies based in Buenos Aires, Argentina
- Internet security companies based in Adelaide, Australia
- Internet security companies based in Brisbane, Australia
- Internet security companies based in Canberra, Australia
- Internet security companies based in Melbourne, Australia
- Internet security companies based in Perth, Australia
- Internet security companies based in Sydney, Australia
- Internet security companies based in Vienna, Austria
- Internet security companies based in Dhaka, Bangladesh
- Internet security companies based in Barueri, Brazil
- Internet security companies based in Belo Horizonte, Brazil
- Internet security companies based in Brasilia, Brazil
Cite this list
RevenueBase Data Team. Top 25 internet security companies based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/internet-security-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Internet security companies based in Buenos Aires, Argentina
- Internet security companies based in Adelaide, Australia
- Internet security companies based in Brisbane, Australia
- Internet security companies based in Canberra, Australia
- Internet security companies based in Melbourne, Australia
- Internet security companies based in Perth, Australia
Company intelligence · public preview
Top 25 internet security companies based in the United States
RevenueBase records 9,190 matching company records for internet security companies based in the United States, with 234,071 tracked contacts and 98,860 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 internet security companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: Sunnyvale, CA, United StatesReported employees: 10001+ | Sunnyvale, CA, United States | 10001+ | Exact match | 15,414 contacts → |
“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: San Jose, CA, United StatesReported employees: 10001+ | San Jose, CA, United States | 10001+ | Exact match | 11,878 contacts → |
“Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: Remote, United StatesReported employees: 5,001-10,000 | Remote, United States | 5,001-10,000 | Exact match | 11,304 contacts → |
“CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 3,628 contacts → |
“SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: Plano, TX, United StatesReported employees: 1,001-5,000 | Plano, TX, United States | 1,001-5,000 | Exact match | 3,510 contacts → |
“Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 3,342 contacts → |
“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…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Foster City, CA, United StatesReported employees: 1,001-5,000 | Foster City, CA, United States | 1,001-5,000 | Exact match | 3,323 contacts → |
“Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Mountain View, CA, United StatesReported employees: 1,001-5,000 | Mountain View, CA, United States | 1,001-5,000 | Exact match | 3,154 contacts → |
“SentinelOne is the world's leading AI-powered cybersecurity platform.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Arlington, VA, United StatesReported employees: 1,001-5,000 | Arlington, VA, United States | 1,001-5,000 | Exact match | 3,071 contacts → |
“GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Campbell, CA, United StatesReported employees: 1,001-5,000 | Campbell, CA, United States | 1,001-5,000 | Exact match | 2,408 contacts → |
“Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,171 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,928 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Herndon, VA, United StatesReported employees: 1,001-5,000 | Herndon, VA, United States | 1,001-5,000 | Exact match | 1,901 contacts → |
“ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: Johns Creek, GA, United StatesReported employees: 1,001-5,000 | Johns Creek, GA, United States | 1,001-5,000 | Exact match | 1,770 contacts → |
“BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Eden Prairie, MN, United StatesReported employees: 1,001-5,000 | Eden Prairie, MN, United States | 1,001-5,000 | Exact match | 1,691 contacts → |
“Fortra delivers AI-amplified data security solutions that help organizations use and protect data with confidence.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: Huntsville, AL, United StatesReported employees: 10001+ | Huntsville, AL, United States | 10001+ | Exact match | 1,482 contacts → |
“Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 1,413 contacts → |
“Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,346 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Tampa, FL, United StatesReported employees: 1,001-5,000 | Tampa, FL, United States | 1,001-5,000 | Exact match | 1,290 contacts → |
“ReliaQuest exists to Make Security Possible.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: San Jose, CA, United StatesReported employees: 1,001-5,000 | San Jose, CA, United States | 1,001-5,000 | Exact match | 1,236 contacts → |
“As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 1,192 contacts → |
“On Dec.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | HQ: Seattle, WA, United StatesReported employees: 1,001-5,000 | Seattle, WA, United States | 1,001-5,000 | Exact match | 1,174 contacts → |
“WatchGuard® Technologies, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Fort Washington, PA, United StatesReported employees: 501-1,000 | Fort Washington, PA, United States | 501-1,000 | Exact match | 1,082 contacts → |
“IT Solutions Technology Partners (ITS) is a trusted managed services provider with 30+ years of experience helping organizations leverage technology as a competitive advantage.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 1,072 contacts → |
“As an award-winning, global IT solutions provider, we are changing the nature of transformation.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Trevose, PA, United StatesReported employees: 201-500 | Trevose, PA, United States | 201-500 | Exact match | 1,017 contacts → |
“PPC is now part of DSA” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 9,190 company matches
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Internet security companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
9,164 records in the displayed employee bands.
26 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 9,190 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
Publisher-reported method study
The published RevenueBase SmartSearch benchmark
86% good or better at Exact
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. It reports 86% of Exact matches judged good or better, and 77% for a 240-pair sample of one- or two-word categories. This evaluates the method across study queries rather than auditing this individual list.
Read the study and full methodology ↗RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Internet security companies by metro
- Internet security companies in New York310
- Internet security companies in Houston166
- Internet security companies in Austin156
- Internet security companies in Atlanta151
- Internet security companies in Miami148
- Internet security companies in Washington140
- Internet security companies in Chicago126
- Internet security companies in Dallas124
- Internet security companies in Tampa108
- Internet security companies in San Francisco102
- Internet security companies in Los Angeles87
- Internet security companies in San Diego85
- Internet security companies in Phoenix79
- Internet security companies in Denver75
- Internet security companies in Arlington74
- Internet security companies in Charlotte73
- Internet security companies in Las Vegas68
- Internet security companies in Orlando68
- Internet security companies in San Antonio64
- Internet security companies in Columbia62
- Internet security companies in Boston58
- Internet security companies in Reston58
- Internet security companies in Seattle53
- Internet security companies in Alexandria51
- Internet security companies in Fairfax46
- Internet security companies in Irvine45
- Internet security companies in Sheridan45
- Internet security companies in Wilmington45
- Internet security companies in Mclean44
- Internet security companies in Huntsville42
- Internet security companies in Portland42
- Internet security companies in Baltimore41
- Internet security companies in San Jose39
- Internet security companies in Fort Lauderdale38
- Internet security companies in Nashville38
- Internet security companies in Richmond38
- Internet security companies in Plano37
- Internet security companies in Raleigh37
- Internet security companies in Scottsdale36
- Internet security companies in Herndon34
- Internet security companies in Jacksonville33
- Internet security companies in Ashburn32
- Internet security companies in Frisco32
- Internet security companies in Indianapolis32
- Internet security companies in Pittsburgh32
- Internet security companies in St. Louis32
- Internet security companies in Colorado Springs31
- Internet security companies in Alpharetta30
- Internet security companies in Minneapolis30
- Internet security companies in Columbus29
- Internet security companies in Salt Lake City29
- Internet security companies in Birmingham28
- Internet security companies in Dover28
- Internet security companies in Philadelphia27
- Internet security companies in St. Petersburg27
- Internet security companies in Knoxville26
- Internet security companies in Louisville26
- Internet security companies in Cincinnati25
Questions about this company list
What does Exact match mean for internet security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many internet security companies did RevenueBase find based in the United States?
The saved snapshot records 9,190 matching company records, 234,071 tracked contacts and 98,860 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Internet security companies by geography
- Internet security companies based in Buenos Aires, Argentina
- Internet security companies based in Adelaide, Australia
- Internet security companies based in Brisbane, Australia
- Internet security companies based in Canberra, Australia
- Internet security companies based in Melbourne, Australia
- Internet security companies based in Perth, Australia
- Internet security companies based in Sydney, Australia
- Internet security companies based in Vienna, Austria
- Internet security companies based in Dhaka, Bangladesh
- Internet security companies based in Barueri, Brazil
- Internet security companies based in Belo Horizonte, Brazil
- Internet security companies based in Brasilia, Brazil
Cite this list
RevenueBase Data Team. Top 25 internet security companies based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/internet-security-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Internet security companies based in Buenos Aires, Argentina
- Internet security companies based in Adelaide, Australia
- Internet security companies based in Brisbane, Australia
- Internet security companies based in Canberra, Australia
- Internet security companies based in Melbourne, Australia
- Internet security companies based in Perth, Australia