Company lists · Data refreshed September 2026
Top 18 Managed security services companies based in San Francisco, United States
RevenueBase identified 46 company matches for managed security services companies associated with San Francisco, United States as of September 2026 and tracks 246 professional contacts across them, including 105 with verified work emails. Across the United States, New York is the largest hub for this category (103 companies); San Francisco has 46.
This list covers company matches for managed security services companies associated with San Francisco, 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 14, 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 18 largest managed security services companies based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 31 contacts → | ||||
Exact match “If your business’s IT service demands have left you feeling vulnerable or overloaded, you’re in the right place.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 2 | 28 contacts → | ||||
Exact match “Dataway, Inc.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 3 | 24 contacts → | ||||
Exact match “A technology driven Managed Security Service Provider purpose built for Aerospace and Defense.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 4 | 24 contacts → | ||||
Exact match “Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 5 | 18 contacts → | ||||
Exact match “ActZero, now part of WatchGuard, offers a Managed Detection and Response (MDR) service that provides a powerful full-stack cybersecurity solution at a fair price.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 6 | 11 contacts → | ||||
Exact match “Overe's SaaS Security platform provides businesses with a comprehensive but easy-to-use Cybersecurity service.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 7 | 10 contacts → | ||||
Exact match “AI is spreading uncontrollably across your organization.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 8 | 10 contacts → | ||||
Exact match “Epic Machines is a Value Added Reseller and Managed Security Services provider offering Security Transformation using Cloud-native solutions to commercial and government markets.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 9 | 6 contacts → | ||||
Exact match “Petra is ITDR 2.0, built to catch business email compromise, token theft, and other identity attacks in the AI era.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 10 | 5 contacts → | ||||
Exact match “Enterprise Cybersecurity Made Simple” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 11 | 4 contacts → | ||||
Exact match “At XIVX Risk & Threat Intelligence, we help groups minimize risk, understand threats, and achieve compliance the right way: through functional and effective cybersecurity.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 12 | 3 contacts → | ||||
Exact match “With over two decades of experience in sensitive data management across hundreds of clients and installations, we at TekLeap understand the inherent weaknesses and threats in…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 13 | 3 contacts → | ||||
Exact match “SecureNexa is a global cybersecurity partner for small and mid-sized businesses.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 14 | 1 contacts → | ||||
Exact match “Rubica exists to protect the "digital rights” of individuals and to empower people to take control of their security and privacy – and ultimately reduce the incidence of…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 15 | 1 contacts → | ||||
Exact match “Fusion Security Solutions provides expert knowledge and methods, while delivering effective, efficient, and consistent security and managed services solutions for your business.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 16 | 1 contacts → | ||||
Exact match “We are mainly focused on providing managed security services as well as consultancy on security architecture.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 17 | 1 contacts → | ||||
Exact match “D3 Networks specializes in meeting the information technology and cybersecurity needs of firms in the financial industry.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 18 | 1 contacts → | ||||
Exact match “Posturity’s managed cybersecurity technology governance service optimizes the spend, protection, compliance, and manageability of your stack.” Recorded in the RevenueBase company graph · Sep 14, 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 “managed security services 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 18 of 46 managed security services companies based in San Francisco, United States
See the full list, filter by size, metro and specialty, and access 105 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Managed security services companies based in San Francisco, United States at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 46 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 San Francisco, United States whose business descriptions match “managed security services 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 105 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 14, 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.
Managed security services companies by metro in the United States
- Managed security services companies in New York103
- Managed security services companies in Miami81
- Managed security services companies in Houston80
- Managed security services companies in Dallas63
- Managed security services companies in Austin61
- Managed security services companies in Chicago56
- Managed security services companies in Atlanta51
- Managed security services companies in Los Angeles49
- Managed security services companies in Tampa44
- Managed security services companies in Washington42
- Managed security services companies in Charlotte38
- Managed security services companies in Denver35
- Managed security services companies in San Diego34
- Managed security services companies in Las Vegas32
- Managed security services companies in Phoenix31
- Managed security services companies in Irvine29
- Managed security services companies in Columbia28
- Managed security services companies in Boston26
- Managed security services companies in Wilmington26
- Managed security services companies in Arlington25
- Managed security services companies in San Jose25
- Managed security services companies in Scottsdale25
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 “managed security services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many managed security services companies are there based in San Francisco, United States?
RevenueBase identified 46 company matches for managed security services companies associated with San Francisco, 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?
Xterra Solutions, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most managed security services companies?
New York leads the United States with 103 company records, followed by Miami (81) and Houston (80). San Francisco has 46.
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 105 professional contacts with verified work emails tracked across these 46 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 14, 2026.
Ready to reach these companies? Verified emails and direct dials for all 46 managed security services companies based in San Francisco, United States. Start with a free account, no credit card.
Download this list →Related lists
Managed security services companies by geography
- Managed security services companies based in the United States
- Managed security services companies based in the United Kingdom
- Managed security services companies based in Brazil
- Managed security services companies based in Canada
- Managed security services companies based in Australia
- Managed security services companies based in France
- Managed security services companies based in Germany
- Managed security services companies based in Italy
- Managed security services companies based in South Africa
- Managed security services companies based in Spain
- Managed security services companies based in the Netherlands
- Managed security services companies based in Mexico
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
- Managed security services companies based in the United States
- Managed security services companies based in the United Kingdom
- Managed security services companies based in Brazil
- Managed security services companies based in Canada
- Managed security services companies based in Australia
- Managed security services companies based in France
Company intelligence · public preview
Top 18 managed security services companies based in San Francisco, 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 46 matching company records for managed security services companies based in San Francisco, United States, with 246 tracked contacts and 105 verified work emails.
This public preview shows 18 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 14, 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 18 managed security services companies based in San Francisco, 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 |  Xterra Solutions, INCxterrasolutions.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 31 contacts → |
“If your business’s IT service demands have left you feeling vulnerable or overloaded, you’re in the right place.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Datawaydataway.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 28 contacts → |
“Dataway, Inc.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Atomusatomuscyber.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 24 contacts → |
“A technology driven Managed Security Service Provider purpose built for Aerospace and Defense.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Sentantsentant.netHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 24 contacts → |
“Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Actzero, A Watchguard Brandactzero.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 18 contacts → |
“ActZero, now part of WatchGuard, offers a Managed Detection and Response (MDR) service that provides a powerful full-stack cybersecurity solution at a fair price.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  overe.ioovere.ioHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 11 contacts → |
“Overe's SaaS Security platform provides businesses with a comprehensive but easy-to-use Cybersecurity service.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  ZAUNzaun.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 10 contacts → |
“AI is spreading uncontrollably across your organization.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Epic Machines, INCepicmachines.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 10 contacts → |
“Epic Machines is a Value Added Reseller and Managed Security Services provider offering Security Transformation using Cloud-native solutions to commercial and government markets.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Petra Securitypetrasecurity.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“Petra is ITDR 2.0, built to catch business email compromise, token theft, and other identity attacks in the AI era.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Startup Defensestartupdefense.ioHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 5 contacts → |
“Enterprise Cybersecurity Made Simple” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Xivx Risk & Threat Intelligencexivx.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“At XIVX Risk & Threat Intelligence, we help groups minimize risk, understand threats, and achieve compliance the right way: through functional and effective cybersecurity.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Tekleaptekleap.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 3 contacts → |
“With over two decades of experience in sensitive data management across hundreds of clients and installations, we at TekLeap understand the inherent weaknesses and threats in…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Securenexasecurenexaglobal.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“SecureNexa is a global cybersecurity partner for small and mid-sized businesses.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Rubica, INCrubica.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 1 contacts → |
“Rubica exists to protect the "digital rights” of individuals and to empower people to take control of their security and privacy – and ultimately reduce the incidence of…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Fusion Security Solutions INCfusionsecuritysolutions.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Fusion Security Solutions provides expert knowledge and methods, while delivering effective, efficient, and consistent security and managed services solutions for your business.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Badgereyesecuritybadgereyesecurity.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“We are mainly focused on providing managed security services as well as consultancy on security architecture.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  D3 Networksd3networks.netHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“D3 Networks specializes in meeting the information technology and cybersecurity needs of firms in the financial industry.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Posturityposturity.ioHQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 1 contacts → |
“Posturity’s managed cybersecurity technology governance service optimizes the spend, protection, compliance, and manageability of your stack.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 46 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Managed security services companies: dataset insights
September 14, 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
44 records in the displayed employee bands.
2 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 across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 46 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 14, 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 ↗
Managed security services companies by metro in the United States
- Managed security services companies in New York103
- Managed security services companies in Miami81
- Managed security services companies in Houston80
- Managed security services companies in Dallas63
- Managed security services companies in Austin61
- Managed security services companies in Chicago56
- Managed security services companies in Atlanta51
- Managed security services companies in Los Angeles49
- Managed security services companies in Tampa44
- Managed security services companies in Washington42
- Managed security services companies in Charlotte38
- Managed security services companies in Denver35
- Managed security services companies in San Diego34
- Managed security services companies in Las Vegas32
- Managed security services companies in Phoenix31
- Managed security services companies in Irvine29
- Managed security services companies in Columbia28
- Managed security services companies in Boston26
- Managed security services companies in Wilmington26
- Managed security services companies in Arlington25
- Managed security services companies in San Jose25
- Managed security services companies in Scottsdale25
Questions about this company list
What does Exact match mean for managed security services 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 managed security services companies did RevenueBase find based in San Francisco, United States?
The saved snapshot records 46 matching company records, 246 tracked contacts and 105 verified emails. The public preview displays 18 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 14, 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
Managed security services companies by geography
- Managed security services companies based in the United States
- Managed security services companies based in the United Kingdom
- Managed security services companies based in Brazil
- Managed security services companies based in Canada
- Managed security services companies based in Australia
- Managed security services companies based in France
- Managed security services companies based in Germany
- Managed security services companies based in Italy
- Managed security services companies based in South Africa
- Managed security services companies based in Spain
- Managed security services companies based in the Netherlands
- Managed security services companies based in Mexico
Cite this list
RevenueBase Data Team. Top 18 managed security services companies based in San Francisco, United States. Snapshot: September 14, 2026. https://revenuebase.ai/companies/managed-security-services-companies/united-states/san-francisco.
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
- Managed security services companies based in the United States
- Managed security services companies based in the United Kingdom
- Managed security services companies based in Brazil
- Managed security services companies based in Canada
- Managed security services companies based in Australia
- Managed security services companies based in France
Company intelligence · public preview
Top 18 managed security services companies based in San Francisco, United States
RevenueBase records 46 matching company records for managed security services companies based in San Francisco, United States, with 246 tracked contacts and 105 verified work emails.
This public preview shows 18 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 14, 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 18 managed security services companies based in San Francisco, 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 | Xterra Solutions, INCxterrasolutions.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 31 contacts → |
“If your business’s IT service demands have left you feeling vulnerable or overloaded, you’re in the right place.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Datawaydataway.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 28 contacts → |
“Dataway, Inc.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Atomusatomuscyber.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 24 contacts → |
“A technology driven Managed Security Service Provider purpose built for Aerospace and Defense.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sentantsentant.net HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 24 contacts → |
“Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Actzero, A Watchguard Brandactzero.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 18 contacts → |
“ActZero, now part of WatchGuard, offers a Managed Detection and Response (MDR) service that provides a powerful full-stack cybersecurity solution at a fair price.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | overe.ioovere.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 11 contacts → |
“Overe's SaaS Security platform provides businesses with a comprehensive but easy-to-use Cybersecurity service.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | ZAUNzaun.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 10 contacts → |
“AI is spreading uncontrollably across your organization.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Epic Machines, INCepicmachines.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 10 contacts → |
“Epic Machines is a Value Added Reseller and Managed Security Services provider offering Security Transformation using Cloud-native solutions to commercial and government markets.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Petra Securitypetrasecurity.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“Petra is ITDR 2.0, built to catch business email compromise, token theft, and other identity attacks in the AI era.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Startup Defensestartupdefense.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 5 contacts → |
“Enterprise Cybersecurity Made Simple” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Xivx Risk & Threat Intelligencexivx.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“At XIVX Risk & Threat Intelligence, we help groups minimize risk, understand threats, and achieve compliance the right way: through functional and effective cybersecurity.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Tekleaptekleap.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 3 contacts → |
“With over two decades of experience in sensitive data management across hundreds of clients and installations, we at TekLeap understand the inherent weaknesses and threats in…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Securenexasecurenexaglobal.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“SecureNexa is a global cybersecurity partner for small and mid-sized businesses.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Rubica, INCrubica.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 1 contacts → |
“Rubica exists to protect the "digital rights” of individuals and to empower people to take control of their security and privacy – and ultimately reduce the incidence of…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Fusion Security Solutions INCfusionsecuritysolutions.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Fusion Security Solutions provides expert knowledge and methods, while delivering effective, efficient, and consistent security and managed services solutions for your business.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Badgereyesecuritybadgereyesecurity.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“We are mainly focused on providing managed security services as well as consultancy on security architecture.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | D3 Networksd3networks.net HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“D3 Networks specializes in meeting the information technology and cybersecurity needs of firms in the financial industry.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Posturityposturity.io HQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 1 contacts → |
“Posturity’s managed cybersecurity technology governance service optimizes the spend, protection, compliance, and manageability of your stack.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 46 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Managed security services companies: dataset insights
September 14, 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
44 records in the displayed employee bands.
2 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 across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 46 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 14, 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 ↗
Managed security services companies by metro in the United States
- Managed security services companies in New York103
- Managed security services companies in Miami81
- Managed security services companies in Houston80
- Managed security services companies in Dallas63
- Managed security services companies in Austin61
- Managed security services companies in Chicago56
- Managed security services companies in Atlanta51
- Managed security services companies in Los Angeles49
- Managed security services companies in Tampa44
- Managed security services companies in Washington42
- Managed security services companies in Charlotte38
- Managed security services companies in Denver35
- Managed security services companies in San Diego34
- Managed security services companies in Las Vegas32
- Managed security services companies in Phoenix31
- Managed security services companies in Irvine29
- Managed security services companies in Columbia28
- Managed security services companies in Boston26
- Managed security services companies in Wilmington26
- Managed security services companies in Arlington25
- Managed security services companies in San Jose25
- Managed security services companies in Scottsdale25
Questions about this company list
What does Exact match mean for managed security services 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 managed security services companies did RevenueBase find based in San Francisco, United States?
The saved snapshot records 46 matching company records, 246 tracked contacts and 105 verified emails. The public preview displays 18 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 14, 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
Managed security services companies by geography
- Managed security services companies based in the United States
- Managed security services companies based in the United Kingdom
- Managed security services companies based in Brazil
- Managed security services companies based in Canada
- Managed security services companies based in Australia
- Managed security services companies based in France
- Managed security services companies based in Germany
- Managed security services companies based in Italy
- Managed security services companies based in South Africa
- Managed security services companies based in Spain
- Managed security services companies based in the Netherlands
- Managed security services companies based in Mexico
Cite this list
RevenueBase Data Team. Top 18 managed security services companies based in San Francisco, United States. Snapshot: September 14, 2026. https://revenuebase.ai/companies/managed-security-services-companies/united-states/san-francisco.
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
- Managed security services companies based in the United States
- Managed security services companies based in the United Kingdom
- Managed security services companies based in Brazil
- Managed security services companies based in Canada
- Managed security services companies based in Australia
- Managed security services companies based in France