Company lists · Data refreshed September 2026
Top 25 Cybersecurity firms based in San Francisco, United States
RevenueBase identified 183 company matches for cybersecurity firms associated with San Francisco, United States as of September 2026 and tracks 7,590 professional contacts across them, including 2,491 with verified work emails and 1,512 with mobile numbers. Across the United States, New York is the largest hub for this category (326 companies); San Francisco has 170.
This list covers company matches for cybersecurity firms 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 10, 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 cybersecurity firms based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,649 contacts → | ||||
Exact match “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 2 | 724 contacts → | ||||
Exact match “Coalition is the world's first Active Insurance provider designed to help prevent digital risk before it strikes.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 3 | 375 contacts → | ||||
Exact match “We protect the world’s critical infrastructure from cyber threats.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 4 | 364 contacts → | ||||
Exact match “Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 5 | 348 contacts → | ||||
Exact match “At-Bay is the world’s first InsurSec provider designed from the ground up to help businesses tackle cyber risk head on.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 6 | 263 contacts → | ||||
Exact match “SecurityPal is a Cybersecurity Assurance Management Platform that blends AI-powered automation with expert oversight to help organizations accelerate trust, reduce friction, and…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 7 | 211 contacts → | ||||
Exact match “Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 8 | 208 contacts → | ||||
Exact match “TAC Security (NSE: TAC) TAC Security, a leading publicly listed global cybersecurity company specializing in vulnerability management, today serves clients across 100 countries…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 9 | 124 contacts → | ||||
Exact match “CyberCube is delivering the world’s leading cyber risk modeling and analytics.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 10 | 80 contacts → | ||||
Exact match “Socket is a cybersecurity platform that protects companies from software supply chain attacks.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 11 | 66 contacts → | ||||
Exact match “Bastille is the leader in Wireless Airspace Cybersecurity.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 12 | 53 contacts → | ||||
Exact match “Cloudmark was acquired by Proofpoint.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 13 | 46 contacts → | ||||
Exact match “NightDragon is an investment and advisory firm focused on investing in growth and late-stage companies within the cybersecurity, safety, security, and privacy industry.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 14 | 43 contacts → | ||||
Exact match “Escape automates the full offensive security lifecycle, multiplying the impact of every security engineer tenfold.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 15 | 40 contacts → | ||||
Exact match “Practical DevSecOps is a global cybersecurity education company specializing in hands-on DevSecOps, AI Security, and Application Security training and certifications.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 16 | 33 contacts → | ||||
Exact match “Akto is the fastest growing AI Security platform for your teams to secure AI agents, MCPs, LLMs, Agent skills, gen AI apps in your organization.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 17 | 30 contacts → | ||||
Exact match “Enhanced security in minutes and get immediately unparalleled protection.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 18 | 29 contacts → | ||||
Exact match “Upfort is a leading platform for cyber security and insurance that provides holistic protection from evolving cyber threats.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 19 | 28 contacts → | ||||
Exact match “Dataway, Inc.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 20 | 27 contacts → | ||||
Exact match “We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 21 | 26 contacts → | ||||
Exact match “Symmetry is the Data+AI Security Company.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 22 | 25 contacts → | ||||
Exact match “Actifile helps organizations automate their Data Discovery, Monitoring and Protection needs, addressing external data threats (like ransomware), insider threats (like shadow IT)…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 23 | 24 contacts → | ||||
Exact match “A technology driven Managed Security Service Provider purpose built for Aerospace and Defense.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase | |||||
| 24 | 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 10, 2026 · View company records in RevenueBase | |||||
| 25 | 23 contacts → | ||||
Exact match “Doyensec is an independent security research and development company focused on vulnerability discovery and remediation.” Recorded in the RevenueBase company graph · Sep 10, 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 “cybersecurity firms”. 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 183 cybersecurity firms based in San Francisco, United States
See the full list, filter by size, metro and specialty, and access 2,491 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Cybersecurity firms based in San Francisco, United States at a glance
As of Sep 10, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 12.0dCompany record updated
Median 54.0dHow 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 “cybersecurity firms” 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 2,491 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 10, 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.
Cybersecurity firms by metro in the United States
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 “cybersecurity firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cybersecurity firms are there based in San Francisco, United States?
RevenueBase identified 183 company matches for cybersecurity firms 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?
Bugcrowd 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 cybersecurity firms?
New York leads the United States with 326 company records, followed by Washington (184) and Austin (181). San Francisco has 170.
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 2,491 professional contacts with verified work emails tracked across these 183 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 10, 2026.
Ready to reach these companies? Verified emails and direct dials for all 183 cybersecurity firms based in San Francisco, United States. Start with a free account, no credit card.
Download this list →Related lists
Cybersecurity firms by geography
- Cybersecurity firms based in the United States
- Cybersecurity firms based in the United Kingdom
- Cybersecurity firms based in France
- Cybersecurity firms based in Canada
- Cybersecurity firms based in Brazil
- Cybersecurity firms based in Australia
- Cybersecurity firms based in Germany
- Cybersecurity firms based in Spain
- Cybersecurity firms based in the Netherlands
- Cybersecurity firms based in Italy
- Cybersecurity firms based in Israel
- Cybersecurity firms 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
Company intelligence · public preview
Top 25 cybersecurity firms 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 183 matching company records for cybersecurity firms based in San Francisco, United States, with 7,590 tracked contacts and 2,491 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 10, 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 cybersecurity firms 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 |  Bugcrowdbugcrowd.comHQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 3,649 contacts → |
“We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Coalition, INCcoalitioninc.comHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 724 contacts → |
“Coalition is the world's first Active Insurance provider designed to help prevent digital risk before it strikes.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Nozomi Networksnozominetworks.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 375 contacts → |
“We protect the world’s critical infrastructure from cyber threats.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  horizon3.aihorizon3.aiHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 364 contacts → |
“Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  At-Bayat-bay.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 348 contacts → |
“At-Bay is the world’s first InsurSec provider designed from the ground up to help businesses tackle cyber risk head on.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Securitypal AIsecuritypalhq.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 263 contacts → |
“SecurityPal is a Cybersecurity Assurance Management Platform that blends AI-powered automation with expert oversight to help organizations accelerate trust, reduce friction, and…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Veherevehere.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 211 contacts → |
“Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  TAC Securitytacsecurity.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 208 contacts → |
“TAC Security (NSE: TAC) TAC Security, a leading publicly listed global cybersecurity company specializing in vulnerability management, today serves clients across 100 countries…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cybercubecybcube.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 124 contacts → |
“CyberCube is delivering the world’s leading cyber risk modeling and analytics.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Socketsocket.devHQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 80 contacts → |
“Socket is a cybersecurity platform that protects companies from software supply chain attacks.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Bastillebastille.netHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 66 contacts → |
“Bastille is the leader in Wireless Airspace Cybersecurity.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Cloudmarkcloudmark.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 53 contacts → |
“Cloudmark was acquired by Proofpoint.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Nightdragonnightdragon.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 46 contacts → |
“NightDragon is an investment and advisory firm focused on investing in growth and late-stage companies within the cybersecurity, safety, security, and privacy industry.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Escapeescape.techHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 43 contacts → |
“Escape automates the full offensive security lifecycle, multiplying the impact of every security engineer tenfold.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Practical Devsecopspractical-devsecops.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 40 contacts → |
“Practical DevSecOps is a global cybersecurity education company specializing in hands-on DevSecOps, AI Security, and Application Security training and certifications.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  akto.ioakto.ioHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 33 contacts → |
“Akto is the fastest growing AI Security platform for your teams to secure AI agents, MCPs, LLMs, Agent skills, gen AI apps in your organization.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Strongestlayerstrongestlayer.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 30 contacts → |
“Enhanced security in minutes and get immediately unparalleled protection.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Upfortupfort.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 29 contacts → |
“Upfort is a leading platform for cyber security and insurance that provides holistic protection from evolving cyber threats.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  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 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Seworksse.worksHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 27 contacts → |
“We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Symmetry Systemssymmetry-systems.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 26 contacts → |
“Symmetry is the Data+AI Security Company.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Actifileactifile.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 25 contacts → |
“Actifile helps organizations automate their Data Discovery, Monitoring and Protection needs, addressing external data threats (like ransomware), insider threats (like shadow IT)…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  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 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  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 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Doyensecdoyensec.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 23 contacts → |
“Doyensec is an independent security research and development company focused on vulnerability discovery and remediation.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 183 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Cybersecurity firms: dataset insights
September 10, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
181 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.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 12.0dCompany record updated
Median 54.0dHow 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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 10, 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 ↗
Cybersecurity firms by metro in the United States
Questions about this company list
What does Exact match mean for cybersecurity firms?
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 cybersecurity firms did RevenueBase find based in San Francisco, United States?
The saved snapshot records 183 matching company records, 7,590 tracked contacts and 2,491 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 10, 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
Cybersecurity firms by geography
- Cybersecurity firms based in the United States
- Cybersecurity firms based in the United Kingdom
- Cybersecurity firms based in France
- Cybersecurity firms based in Canada
- Cybersecurity firms based in Brazil
- Cybersecurity firms based in Australia
- Cybersecurity firms based in Germany
- Cybersecurity firms based in Spain
- Cybersecurity firms based in the Netherlands
- Cybersecurity firms based in Italy
- Cybersecurity firms based in Israel
- Cybersecurity firms based in Mexico
Cite this list
RevenueBase Data Team. Top 25 cybersecurity firms based in San Francisco, United States. Snapshot: September 10, 2026. https://revenuebase.ai/companies/cybersecurity-firms/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
Company intelligence · public preview
Top 25 cybersecurity firms based in San Francisco, United States
RevenueBase records 183 matching company records for cybersecurity firms based in San Francisco, United States, with 7,590 tracked contacts and 2,491 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 10, 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 cybersecurity firms 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 | Bugcrowdbugcrowd.com HQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 3,649 contacts → |
“We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Coalition, INCcoalitioninc.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 724 contacts → |
“Coalition is the world's first Active Insurance provider designed to help prevent digital risk before it strikes.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Nozomi Networksnozominetworks.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 375 contacts → |
“We protect the world’s critical infrastructure from cyber threats.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | horizon3.aihorizon3.ai HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 364 contacts → |
“Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | At-Bayat-bay.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 348 contacts → |
“At-Bay is the world’s first InsurSec provider designed from the ground up to help businesses tackle cyber risk head on.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Securitypal AIsecuritypalhq.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 263 contacts → |
“SecurityPal is a Cybersecurity Assurance Management Platform that blends AI-powered automation with expert oversight to help organizations accelerate trust, reduce friction, and…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Veherevehere.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 211 contacts → |
“Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | TAC Securitytacsecurity.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 208 contacts → |
“TAC Security (NSE: TAC) TAC Security, a leading publicly listed global cybersecurity company specializing in vulnerability management, today serves clients across 100 countries…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cybercubecybcube.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 124 contacts → |
“CyberCube is delivering the world’s leading cyber risk modeling and analytics.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Socketsocket.dev HQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 80 contacts → |
“Socket is a cybersecurity platform that protects companies from software supply chain attacks.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Bastillebastille.net HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 66 contacts → |
“Bastille is the leader in Wireless Airspace Cybersecurity.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Cloudmarkcloudmark.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 53 contacts → |
“Cloudmark was acquired by Proofpoint.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Nightdragonnightdragon.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 46 contacts → |
“NightDragon is an investment and advisory firm focused on investing in growth and late-stage companies within the cybersecurity, safety, security, and privacy industry.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Escapeescape.tech HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 43 contacts → |
“Escape automates the full offensive security lifecycle, multiplying the impact of every security engineer tenfold.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Practical Devsecopspractical-devsecops.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 40 contacts → |
“Practical DevSecOps is a global cybersecurity education company specializing in hands-on DevSecOps, AI Security, and Application Security training and certifications.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | akto.ioakto.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 33 contacts → |
“Akto is the fastest growing AI Security platform for your teams to secure AI agents, MCPs, LLMs, Agent skills, gen AI apps in your organization.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Strongestlayerstrongestlayer.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 30 contacts → |
“Enhanced security in minutes and get immediately unparalleled protection.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Upfortupfort.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 29 contacts → |
“Upfort is a leading platform for cyber security and insurance that provides holistic protection from evolving cyber threats.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | 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 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Seworksse.works HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 27 contacts → |
“We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Symmetry Systemssymmetry-systems.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 26 contacts → |
“Symmetry is the Data+AI Security Company.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Actifileactifile.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 25 contacts → |
“Actifile helps organizations automate their Data Discovery, Monitoring and Protection needs, addressing external data threats (like ransomware), insider threats (like shadow IT)…” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | 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 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | 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 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Doyensecdoyensec.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 23 contacts → |
“Doyensec is an independent security research and development company focused on vulnerability discovery and remediation.” Recorded description excerpt · September 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 183 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Cybersecurity firms: dataset insights
September 10, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
181 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.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 12.0dCompany record updated
Median 54.0dHow 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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 10, 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 ↗
Cybersecurity firms by metro in the United States
Questions about this company list
What does Exact match mean for cybersecurity firms?
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 cybersecurity firms did RevenueBase find based in San Francisco, United States?
The saved snapshot records 183 matching company records, 7,590 tracked contacts and 2,491 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 10, 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
Cybersecurity firms by geography
- Cybersecurity firms based in the United States
- Cybersecurity firms based in the United Kingdom
- Cybersecurity firms based in France
- Cybersecurity firms based in Canada
- Cybersecurity firms based in Brazil
- Cybersecurity firms based in Australia
- Cybersecurity firms based in Germany
- Cybersecurity firms based in Spain
- Cybersecurity firms based in the Netherlands
- Cybersecurity firms based in Italy
- Cybersecurity firms based in Israel
- Cybersecurity firms based in Mexico
Cite this list
RevenueBase Data Team. Top 25 cybersecurity firms based in San Francisco, United States. Snapshot: September 10, 2026. https://revenuebase.ai/companies/cybersecurity-firms/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗