Company lists · Data refreshed September 2026
Top 25 Website security monitoring services based in the United States
RevenueBase identified 375 company matches for website security monitoring services associated with the United States as of September 2026 and tracks 8,981 professional contacts across them, including 4,283 with verified work emails. Austin is the largest hub.
This list covers company matches for website security monitoring services 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 September 29, 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 website security monitoring services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,058 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 904 contacts → | ||||
Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 641 contacts → | ||||
Exact match “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 566 contacts → | ||||
Exact match “Comodo - Protecting Your Digital World At Comodo, we are dedicated to safeguarding your digital property with Comodo Website Security.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 326 contacts → | ||||
Exact match “Invicti is transforming the way web applications are secured.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 234 contacts → | ||||
Exact match “Axur is the external cybersecurity company empowering security teams to detect, inspect, and respond to threats beyond the perimeter.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 219 contacts → | ||||
Exact match “Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 167 contacts → | ||||
Exact match “DefendEdge is a leading US-based cybersecurity firm specializing in protecting clients' firewalls, endpoints, and applications against cyber threats and vulnerabilities.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 159 contacts → | ||||
Exact match “Hitachi Systems Trusted Cyber Management Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 136 contacts → | ||||
Exact match “DomainTools is the global leader for internet intelligence and the first place security practitioners go when they need to know.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 124 contacts → | ||||
Exact match “Authentic8 helps intelligence and security teams investigate the digital world without exposing who they are, where they are, or what they are working on.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 87 contacts → | ||||
Exact match “Join the Global Leader in Website Security – SiteLock!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 80 contacts → | ||||
Exact match “Bytescare is building the future of Brand Protection.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 70 contacts → | ||||
Exact match “Zyston is a next‑generation cybersecurity partner dedicated to helping organizations stay one step ahead of threats.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 68 contacts → | ||||
Exact match “We've been serving and defending businesses since 2008 as trusted, personable guides in this complex, ever-changing, high-stakes field-MSSP Alert's Top 50 MSSPs Of 2020 -LogRhythm…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 67 contacts → | ||||
Exact match “Protecting the world’s leading Enterprise and Government organisations iZOOlogic provides bespoke and curated Threat Intelligence and Incident Response Asset Discovery and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 60 contacts → | ||||
Exact match “We've offered holistic website security solutions since 2008 including malware removal, malware monitoring and website protection services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 59 contacts → | ||||
Exact match “VulnCheck helps organizations outpace adversaries with exploit intelligence that predicts avenues of attack with speed and accuracy.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 54 contacts → | ||||
Exact match “CentraComm secures and manages hybrid networks.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 53 contacts → | ||||
Exact match “Reflectiz is the AI-powered web exposure company trusted by hundreds of global organizations, including Cox Communications, DAZN, Village Roadshow, Leeds United, and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 47 contacts → | ||||
Exact match “Software ships daily.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 45 contacts → | ||||
Exact match “Skycep is an endpoint security service provider with various solutions for Incident Detection Response and Vulnerability Management.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 43 contacts → | ||||
Exact match “SecqureOne (SQ1) is a Silicon Valley based end-to-end cyber security and compliance solution provider serving businesses globally over the last 17 years.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 39 contacts → | ||||
Exact match “Cyren, now part of Data443, protects hundreds of millions of users around the world from sophisticated and emerging email, malware, and web attacks every day.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 38 contacts → | ||||
Exact match “Are You Ready to Protect Your Business with the Best Cybersecurity Solutions?” Recorded in the RevenueBase company graph · Sep 29, 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 “website security monitoring services”. 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 375 website security monitoring services based in the United States
See the full list, filter by size, metro and specialty, and access 4,283 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Website security monitoring services based in the United States at a glance
As of Sep 29, 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 375 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 “website security monitoring services” 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 4,283 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 September 29, 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.
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 “website security monitoring services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many website security monitoring services are there based in the United States?
RevenueBase identified 375 company matches for website security monitoring services associated with the United States as of September 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?
Qualys tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most website security monitoring services?
Austin leads with 13 company records, followed by New York (11) and Chicago (7).
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 4,283 professional contacts with verified work emails tracked across these 375 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 September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 375 website security monitoring services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Website security monitoring services by geography
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
- Website security monitoring services based in India
- Website security monitoring services based in the Netherlands
- Website security monitoring services based in the United Kingdom
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
- Lists by location
- Lists A-Z
- New lists
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
Company intelligence · public preview
Top 25 website security monitoring services 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 375 matching company records for website security monitoring services based in the United States, with 8,981 tracked contacts and 4,283 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: September 29, 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 website security monitoring services 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 |  Qualysqualys.comHQ: Foster City, CA, United StatesReported employees: 1,001-5,000 | Foster City, CA, United States | 1,001-5,000 | Exact match | 3,058 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Zerofoxzerofox.comHQ: Baltimore, MD, United StatesReported employees: 501-1,000 | Baltimore, MD, United States | 501-1,000 | Exact match | 904 contacts → |
“ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Network Intelligencenetworkintelligence.aiHQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 641 contacts → |
“At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Comodocomodo.comHQ: Bloomfield, NJ, United StatesReported employees: 51-200 | Bloomfield, NJ, United States | 51-200 | Exact match | 566 contacts → |
“Comodo - Protecting Your Digital World At Comodo, we are dedicated to safeguarding your digital property with Comodo Website Security.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Invictiinvicti.comHQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 326 contacts → |
“Invicti is transforming the way web applications are secured.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  AXURaxur.comHQ: Miami, FL, United StatesReported employees: 201-500 | Miami, FL, United States | 201-500 | Exact match | 234 contacts → |
“Axur is the external cybersecurity company empowering security teams to detect, inspect, and respond to threats beyond the perimeter.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Arkose Labsarkoselabs.comHQ: San Mateo, CA, United StatesReported employees: 201-500 | San Mateo, CA, United States | 201-500 | Exact match | 219 contacts → |
“Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Defendedgedefendedge.comHQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 167 contacts → |
“DefendEdge is a leading US-based cybersecurity firm specializing in protecting clients' firewalls, endpoints, and applications against cyber threats and vulnerabilities.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Hitachi Cyberhitachicyber.comHQ: Santa Clara, CA, United StatesReported employees: 501-1,000 | Santa Clara, CA, United States | 501-1,000 | Exact match | 159 contacts → |
“Hitachi Systems Trusted Cyber Management Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Domaintoolsdomaintools.comHQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 136 contacts → |
“DomainTools is the global leader for internet intelligence and the first place security practitioners go when they need to know.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Authentic8authentic8.comHQ: Redwood City, CA, United StatesReported employees: 51-200 | Redwood City, CA, United States | 51-200 | Exact match | 124 contacts → |
“Authentic8 helps intelligence and security teams investigate the digital world without exposing who they are, where they are, or what they are working on.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Sitelocksitelock.comHQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 87 contacts → |
“Join the Global Leader in Website Security – SiteLock!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Bytescarebytescare.comHQ: New Castle, DE, United StatesReported employees: 51-200 | New Castle, DE, United States | 51-200 | Exact match | 80 contacts → |
“Bytescare is building the future of Brand Protection.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Zyston LLCzyston.comHQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 70 contacts → |
“Zyston is a next‑generation cybersecurity partner dedicated to helping organizations stay one step ahead of threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Redleggredlegg.comHQ: St. Charles, IL, United StatesReported employees: 51-200 | St. Charles, IL, United States | 51-200 | Exact match | 68 contacts → |
“We've been serving and defending businesses since 2008 as trusted, personable guides in this complex, ever-changing, high-stakes field-MSSP Alert's Top 50 MSSPs Of 2020 -LogRhythm…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Izoologicizoologic.comHQ: Wilmington, DE, United StatesReported employees: 201-500 | Wilmington, DE, United States | 201-500 | Exact match | 67 contacts → |
“Protecting the world’s leading Enterprise and Government organisations iZOOlogic provides bespoke and curated Threat Intelligence and Incident Response Asset Discovery and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Sucuri Securitysucuri.netHQ: Menifee, CA, United StatesReported employees: 5,001-10,000 | Menifee, CA, United States | 5,001-10,000 | Exact match | 60 contacts → |
“We've offered holistic website security solutions since 2008 including malware removal, malware monitoring and website protection services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Vulncheckvulncheck.comHQ: Lexington, MA, United StatesReported employees: 51-200 | Lexington, MA, United States | 51-200 | Exact match | 59 contacts → |
“VulnCheck helps organizations outpace adversaries with exploit intelligence that predicts avenues of attack with speed and accuracy.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Centracommcentracomm.netHQ: Findlay, OH, United StatesReported employees: 11-50 | Findlay, OH, United States | 11-50 | Exact match | 54 contacts → |
“CentraComm secures and manages hybrid networks.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Reflectizreflectiz.comHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 53 contacts → |
“Reflectiz is the AI-powered web exposure company trusted by hundreds of global organizations, including Cox Communications, DAZN, Village Roadshow, Leeds United, and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Projectdiscoveryprojectdiscovery.ioHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 47 contacts → |
“Software ships daily.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Skycepskycep.comHQ: Virginia Beach, VA, United StatesReported employees: 11-50 | Virginia Beach, VA, United States | 11-50 | Exact match | 45 contacts → |
“Skycep is an endpoint security service provider with various solutions for Incident Detection Response and Vulnerability Management.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Secqureonesecqureone.comHQ: San Jose, CA, United StatesReported employees: 51-200 | San Jose, CA, United States | 51-200 | Exact match | 43 contacts → |
“SecqureOne (SQ1) is a Silicon Valley based end-to-end cyber security and compliance solution provider serving businesses globally over the last 17 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Cyren By Data443data443.comHQ: Research Triangle Park, NC, United StatesReported employees: 201-500 | Research Triangle Park, NC, United States | 201-500 | Exact match | 39 contacts → |
“Cyren, now part of Data443, protects hundreds of millions of users around the world from sophisticated and emerging email, malware, and web attacks every day.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Aspire Tech Services And Solutions Corpaspiretss.comHQ: NY, United StatesReported employees: 51-200 | NY, United States | 51-200 | Exact match | 38 contacts → |
“Are You Ready to Protect Your Business with the Best Cybersecurity Solutions?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 375 company matches
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Website security monitoring services: dataset insights
September 29, 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
374 records in the displayed employee bands.
1 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 375 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: September 29, 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 ↗
Questions about this company list
What does Exact match mean for website security monitoring services?
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 website security monitoring services did RevenueBase find based in the United States?
The saved snapshot records 375 matching company records, 8,981 tracked contacts and 4,283 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: September 29, 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
Website security monitoring services by geography
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
- Website security monitoring services based in India
- Website security monitoring services based in the Netherlands
- Website security monitoring services based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 website security monitoring services based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/website-security-monitoring-services/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
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
Company intelligence · public preview
Top 25 website security monitoring services based in the United States
RevenueBase records 375 matching company records for website security monitoring services based in the United States, with 8,981 tracked contacts and 4,283 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: September 29, 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 website security monitoring services 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 | Qualysqualys.com HQ: Foster City, CA, United StatesReported employees: 1,001-5,000 | Foster City, CA, United States | 1,001-5,000 | Exact match | 3,058 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Zerofoxzerofox.com HQ: Baltimore, MD, United StatesReported employees: 501-1,000 | Baltimore, MD, United States | 501-1,000 | Exact match | 904 contacts → |
“ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Network Intelligencenetworkintelligence.ai HQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 641 contacts → |
“At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Comodocomodo.com HQ: Bloomfield, NJ, United StatesReported employees: 51-200 | Bloomfield, NJ, United States | 51-200 | Exact match | 566 contacts → |
“Comodo - Protecting Your Digital World At Comodo, we are dedicated to safeguarding your digital property with Comodo Website Security.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Invictiinvicti.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 326 contacts → |
“Invicti is transforming the way web applications are secured.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | AXURaxur.com HQ: Miami, FL, United StatesReported employees: 201-500 | Miami, FL, United States | 201-500 | Exact match | 234 contacts → |
“Axur is the external cybersecurity company empowering security teams to detect, inspect, and respond to threats beyond the perimeter.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Arkose Labsarkoselabs.com HQ: San Mateo, CA, United StatesReported employees: 201-500 | San Mateo, CA, United States | 201-500 | Exact match | 219 contacts → |
“Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Defendedgedefendedge.com HQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 167 contacts → |
“DefendEdge is a leading US-based cybersecurity firm specializing in protecting clients' firewalls, endpoints, and applications against cyber threats and vulnerabilities.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Hitachi Cyberhitachicyber.com HQ: Santa Clara, CA, United StatesReported employees: 501-1,000 | Santa Clara, CA, United States | 501-1,000 | Exact match | 159 contacts → |
“Hitachi Systems Trusted Cyber Management Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Domaintoolsdomaintools.com HQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 136 contacts → |
“DomainTools is the global leader for internet intelligence and the first place security practitioners go when they need to know.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Authentic8authentic8.com HQ: Redwood City, CA, United StatesReported employees: 51-200 | Redwood City, CA, United States | 51-200 | Exact match | 124 contacts → |
“Authentic8 helps intelligence and security teams investigate the digital world without exposing who they are, where they are, or what they are working on.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Sitelocksitelock.com HQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 87 contacts → |
“Join the Global Leader in Website Security – SiteLock!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Bytescarebytescare.com HQ: New Castle, DE, United StatesReported employees: 51-200 | New Castle, DE, United States | 51-200 | Exact match | 80 contacts → |
“Bytescare is building the future of Brand Protection.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Zyston LLCzyston.com HQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 70 contacts → |
“Zyston is a next‑generation cybersecurity partner dedicated to helping organizations stay one step ahead of threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Redleggredlegg.com HQ: St. Charles, IL, United StatesReported employees: 51-200 | St. Charles, IL, United States | 51-200 | Exact match | 68 contacts → |
“We've been serving and defending businesses since 2008 as trusted, personable guides in this complex, ever-changing, high-stakes field-MSSP Alert's Top 50 MSSPs Of 2020 -LogRhythm…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Izoologicizoologic.com HQ: Wilmington, DE, United StatesReported employees: 201-500 | Wilmington, DE, United States | 201-500 | Exact match | 67 contacts → |
“Protecting the world’s leading Enterprise and Government organisations iZOOlogic provides bespoke and curated Threat Intelligence and Incident Response Asset Discovery and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Sucuri Securitysucuri.net HQ: Menifee, CA, United StatesReported employees: 5,001-10,000 | Menifee, CA, United States | 5,001-10,000 | Exact match | 60 contacts → |
“We've offered holistic website security solutions since 2008 including malware removal, malware monitoring and website protection services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Vulncheckvulncheck.com HQ: Lexington, MA, United StatesReported employees: 51-200 | Lexington, MA, United States | 51-200 | Exact match | 59 contacts → |
“VulnCheck helps organizations outpace adversaries with exploit intelligence that predicts avenues of attack with speed and accuracy.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Centracommcentracomm.net HQ: Findlay, OH, United StatesReported employees: 11-50 | Findlay, OH, United States | 11-50 | Exact match | 54 contacts → |
“CentraComm secures and manages hybrid networks.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Reflectizreflectiz.com HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 53 contacts → |
“Reflectiz is the AI-powered web exposure company trusted by hundreds of global organizations, including Cox Communications, DAZN, Village Roadshow, Leeds United, and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Projectdiscoveryprojectdiscovery.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 47 contacts → |
“Software ships daily.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Skycepskycep.com HQ: Virginia Beach, VA, United StatesReported employees: 11-50 | Virginia Beach, VA, United States | 11-50 | Exact match | 45 contacts → |
“Skycep is an endpoint security service provider with various solutions for Incident Detection Response and Vulnerability Management.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Secqureonesecqureone.com HQ: San Jose, CA, United StatesReported employees: 51-200 | San Jose, CA, United States | 51-200 | Exact match | 43 contacts → |
“SecqureOne (SQ1) is a Silicon Valley based end-to-end cyber security and compliance solution provider serving businesses globally over the last 17 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cyren By Data443data443.com HQ: Research Triangle Park, NC, United StatesReported employees: 201-500 | Research Triangle Park, NC, United States | 201-500 | Exact match | 39 contacts → |
“Cyren, now part of Data443, protects hundreds of millions of users around the world from sophisticated and emerging email, malware, and web attacks every day.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Aspire Tech Services And Solutions Corpaspiretss.com HQ: NY, United StatesReported employees: 51-200 | NY, United States | 51-200 | Exact match | 38 contacts → |
“Are You Ready to Protect Your Business with the Best Cybersecurity Solutions?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 375 company matches
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Website security monitoring services: dataset insights
September 29, 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
374 records in the displayed employee bands.
1 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 375 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: September 29, 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 ↗
Questions about this company list
What does Exact match mean for website security monitoring services?
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 website security monitoring services did RevenueBase find based in the United States?
The saved snapshot records 375 matching company records, 8,981 tracked contacts and 4,283 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: September 29, 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
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Cite this list
RevenueBase Data Team. Top 25 website security monitoring services based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/website-security-monitoring-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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