Best Cybersecurity Companies in San Mateo, United States
The 42 best Cybersecurity companies in San Mateo, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Securonix.
Our analysis of 71 Cybersecurity companies
$12.5b in tracked funding; 100% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Cybersecurity companies in San Mateo
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Securonix 🦄 Security analytics and event management solutions | $1.1B | 54 mo ago | 2,500 | Harsh Patwardhan Co-Founder | WordPressSentryZendesk+45 | Top 5M | 12 patents User behavior analytics: ML-driven anomaly detection and risk scoring for cybersecurity | 1 award |
| 2 | Feedzai 🦄 Provider of an AI-native platform for fraud and financial crime prevention 92News top 15%Funding top 16%Product top 21%Moat top 26% All 12 signals ▾Newstop 15% Fundingtop 16% Producttop 21% Moattop 26% Markettop 28% Growthtop 29% AItop 30% Techtop 31% Globaltop 31% Innovationtop 32% Talenttop 38% Partnerstop 40% News: 8 BI events in 12 mo (of 24 tracked, 5 types) · +700% YoY Funding: Raised $282M across 6 rounds · 6 rounds over 15 yrs (0.4/yr) rank vs industry peers · Fliar Intelligence Index 92/100 | $282M | 10 mo ago | 597 | Pedro Bizarro Co-Founder & CSO | WordPressApple iCloud MailGoogle Workspace+24 | Top 5M | — | — |
| 3 | AlienVault Analytics, vulnerability assessment & SIEM based enterprise security | $118M | 132 mo ago | 237 | Ignacio Carmona Co-Founder | TypeScriptBootstrapZone.js+18 | Top 50k | 15 patents Cybersecurity threat detection via malware clustering and network information storage systems. | — |
| 4 | Axis Security Zero trust network access solutions provider | $100M | 65 mo ago | 120 | Gil Azrielant Co-Founder and Chief Technology Officer | ReadMeZendeskApple iCloud Mail+12 | Top 1M | — | — |
| 5 | Agari DMARC based email security from targeted spear phishing | $86M | 98 mo ago | 129 | — | — | — | — | — |
| 6 | Lastline Provider of AI-powered network security solutions for detecting and defeating advanced cyber threats | $52M | 109 mo ago | 113 | — | — | — | 13 patents Behavior‑based malware detection, sandbox analysis, and anomalous network activity monitoring | — |
| 7 | Forterra Systems Virtual environment for collaboration | $43M | 206 mo ago | 12 | — | — | — | — | — |
| 8 | Cyence Platform that models cyber risks in financial and economic terms | $40M | 119 mo ago | 1,702 | — | — | — | 18 patents Cyber risk inference and vulnerability scanning analytics with actionable feedback | — |
| 9 | Critical Path Provider of online and mobile communications solutions | $30M | 299 mo ago | 13 | — | — | — | — | — |
| 10 | QuSecure Provider of platform for cryptographic discovery, remediation, and compliance reporting | $28M | 18 mo ago | 79 | Kosta Vilk Co-Founder | WordPressApple iCloud MailMySQL+30 | Top 5M | 24 patents Quantum‑safe cryptographic infrastructure, key management, and post‑quantum security for communications and payments | — |
| 11 | Witness Security and governance guardrails for large language models 45AI top 20%Funding top 30%Moat top 36%Talent top 38% All 9 signals ▾AItop 20% Fundingtop 30% Moattop 36% Talenttop 38% Growthtop 41% Techtop 49% Globalbottom 37% Fin. healthbottom 32% Marketbottom 25% AI: Classified as an AI company Funding: Raised $27.5M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 45/100 | $28M | 7 mo ago | — | Rick Caccia Co-Founder & CEO | WordPressSentryZendesk+28 | Top 5M | — | 1 job opening · 1 launch |
| 12 | Stormpath Provider of authorization management solutions | $25M | 131 mo ago | 27 | — | — | — | — | — |
| 13 | Fortscale Big data analytics & machine learning-based insider threat detection | $23M | 114 mo ago | 40 | — | WordPressPleskMySQL+15 | Top 50M | — | — |
| 14 | Fortify Information Management leader empowering businesses with AI-driven solutions and services | $23M | 223 mo ago | 130 | — | — | — | 3 patents Additive manufacturing scaling, anisotropic particle alignment, and telecom speed‑dial algorithms | — |
| 15 | GuardianEdge Encryption & device control based endpoint data protection | $16M | 229 mo ago | 1 | — | — | — | 6 patents Enterprise data encryption management and key administration for corporate computer systems | — |
| 16 | Sigaba Cybersecurity solutions protecting organizations' people and data against advanced threats | $16M | 261 mo ago | — | Bob Cook CEO | — | — | — | — |
| 17 | Sana Security Comprehensive online protection and security software solutions for diverse devices | $12M | 232 mo ago | 36 | — | — | — | — | — |
| 18 | Dellfer Provider of a security solution to secure IoT devices and connected cars | $10M | 60 mo ago | 15 | James Blaisdell CEO | — | — | 5 patents Automated runtime forensic data collection using function call stack analysis for exploit detection | — |
| 19 | Veodia Enterprise video platform | $8M | 219 mo ago | 2 | — | — | — | 8 patents Digital media encoding, streaming, and distribution technologies for broadcast and storage. | — |
| 20 | Campfire Provider of an AR/VR-based holographic collaboration solution for designing | $8M | 64 mo ago | 22 | Yuhan Liu Co-Founder | Framer SitesReactCloudflare+15 | Top 50M | 24 patents Cross‑platform augmented reality hardware and collaborative interaction systems | — |
| 21 | Sookasa Encryption and HIPAA, FERPA compliance solution for cloud apps | $7M | 148 mo ago | 16 | — | — | — | 4 patents Secure cloud file storage and management with encrypted virtual file systems | — |
| 22 | Mojave Monitoring network traffic for threat detection | $5M | 153 mo ago | 14 | Garrett Larsson Co-Founder & CEO | — | — | — | — |
| 23 | Avatour Virtual meeting platform site visits | $3M | 63 mo ago | 25 | Devon Copley Co-Founder & CEO | Webflow EcommerceWebflowThree.js+27 | Top 10M | — | — |
| 24 | Entreda Provider of communications data intelligence platform for risk management and compliance | $2M | 146 mo ago | 11 | — | DrupalPHPMustache+10 | Top 10M | 2 patents Real-time network access risk assessment and integrated IT service provisioning | — |
| 25 | Remotium Securing BYOD through a Virtualized Mobile Platform | $1M | 160 mo ago | 11 | — | — | — | 2 patents Mobile data exfiltration prevention and secure data handling on mobile devices | — |
Top 12 Cybersecurity companies in San Mateo
#1
Feedzai 🦄Series E · San Mateo, California · founded 2011 · 597 employees$282Mraised▾
Provider of an AI-native platform for fraud and financial crime prevention. The platform offers solutions for scam prevention, identity verification, fraud detection, and anti-money laundering compliance. It includes features such as new account fraud prevention, transaction monitoring, and risk management. The platform serves industries including retail banks, payment service providers, and government entities. It helps to ensure trusted digital identity and reduce compliance costs.
- Oct 2025Series E$75M
- Mar 2021Series D$200M
- Oct 2017Series C$50M
- Oct 2016Series B—
#2
Series B · San Mateo, California · founded 2023$27.5Mraised▾
Security and governance guardrails for large language models. It develops an AI enablement platform, which provides control, and protection of enterprise AI usage. The platform offers key modules including monitoring and auditing AI activity and risk with visibility into applications and usage, secure data, network and people from misuse and attacks, and more.
- Jan 2026Series B$58M
- May 2024Series A$27.5M
#3
Series A · San Mateo, California · founded 2019 · 79 employees$28Mraised▾
Provider of platform for cryptographic discovery, remediation, and compliance reporting. The platform delivers visibility and control over cryptographic assets across systems. It enables cryptographic protection deployment without code changes or system downtime. The platform generates cryptographic bill of materials reports for compliance and risk reduction.
- Feb 2025Series A$28M
- Jan 2025Seed—
- Jan 2023Seed—
#4
Series C · San Mateo, California · founded 2008 · 2500 employees$1.1Braised▾
Security analytics and event management solutions. The features of the product include threat detection and monitoring through behavioral and machine learning algorithms. It uses signature-less anomaly detection techniques and a flexible risk scoring algorithm to track users, account, and system behavior to capture insider threats and APT. It performs analytics of network security, user behavior, identity and access. It provides the risk and threat intelligence that detects and risk ranks the anomalous activities, transactions, and even access privileges.
- Feb 2022Series C$1B
- Mar 2021Series B$24M
- Dec 2019Series A$12M
- Sep 2017Series A$29M
#5
Acquired · San Mateo, California · founded 2019 · 120 employees$100Mraised▾
Zero trust network access solutions provider. The company offers products for cloud applications access security. The company has pioneered in providing solutions for Zero trust network access (ZTNA).
- Mar 2021Series C$50M
- Sep 2020Series B$32M
- Mar 2020Series A$17M
#6
Acquired · San Mateo, California · founded 2007 · 237 employees$118.4Mraised▾
AlienVault is a provider of unified security management (USM) platform that provides all of the essential security controls required for complete security visibility and is designed to enable any IT or security practitioner to benefit from results on day one. Powered by the latest AlienVault Labs Threat Intelligence and the Open Threat Exchange, a crowd-sourced threat intelligence exchange, AlienVault USM delivers a unified, simple and affordable solution for threat detection and compliance management. In July 2018, the company was acquired by AT&T Communications and as of August 2018,
- Aug 2015Series E$52M
- Dec 2013Series D$3.5M
- Sep 2013Series D$26.5M
- Jul 2012Series C$22.4M
#7
Acquired · San Mateo, California · founded 2009 · 129 employees$86.5Mraised▾
Agari provides tools and analytics to eliminate email threats in enterprise. Product Customer Protect provides email security from targeted phishing attacks and is build on open standard of DMARC. Company partners with other email providers, including Google, Microsoft and Yahoo, who support DMARC, to gather telemetry and provide protection. Modules Enforce and Respond are tiers within the Customer Protect platform that create a trusted email channel between company & its customers. Enforce leverages DMARC to stop attacks against the domains company own, Respond disrupts attacks coming from domains which are not under control of enterprise.
- Jun 2018Series E$40M
- Oct 2016Series D$22M
- Jan 2016Series C$2M
- Sep 2014Series C$15M
#8
Acqui-Hired · San Mateo, California · founded 2011 · 113 employees$52.4Mraised▾
Provider of AI-powered network security solutions for detecting and defeating advanced cyber threats. It provides AI-powered network security products to detect and defeat advanced cyberattacks attempting to enter and operate within an organization's network. Its platform offers real-time malware analysis of network, email, web, file, content, and mobile attacks.
- Jul 2017Series C$28.5M
- Aug 2014Series B$10M
- Jun 2013Series B$10M
- 2012Series A$3M
#9
Acqui-Hired · San Mateo, California · founded 1998 · 12 employees$42.9Mraised▾
Forterra Systems creates 3D virtual environments used for meetings, training, events, and collaboration within corporations, government agencies and health care organizations. It uses OLIVE (On-Line Interactive Virtual Environment) software platform. The OLIVE based virtual worlds provides an experience close to a live, face-to-face meeting which is more engaging and immersive than audio and web conferencing. Some of its prominent clients include Thomson Reuters, Lockheed Martin, Accenture, and the US Army. Forterra Systems has partnered with IBM, Accenture, and Autodesk.
- Jun 2009Series E$1.2M
- May 2009Series E$1.2M
- Feb 2009Series E$10M
- Aug 2008Series D$4.5M
#10
Acquired · San Mateo, California · founded 2014 · 1702 employees$40Mraised▾
Cyence provides a platform that models cyber risks in financial and economic terms. It uses data science, cybersecurity, and economics to build an analytics platform that quantifies the financial impact of cyber risk. This enables the insurance industry to select risks, assess and price risks, manage risk portfolios and accumulations, and bring new insurance products to market.
- Sep 2016Series B$40M
#11
Series A · San Mateo, California · founded 2016 · 15 employees$10.2Mraised▾
Provider of a security solution to secure IoT devices and connected cars. The company provides software which is kernel executable boot image which can be run with toolkit installation and code can be re-compiled to provide continuous protection. It enables IoT-connected vehicles and products to be continuously protected against zero-day cyberattacks or any attack taking advantage of known or unknown vulnerabilities. The solution offered by the company can be used to secure systems in many IoT sectors such as transportation, energy, healthcare, communication, and defense.
- Aug 2021Series A$8M
- Feb 2021Series A—
- Feb 2018Seed—
- Jan 2018Seed$2.2M
#12
Acqui-Hired · San Mateo, California · founded 2012 · 40 employees$23Mraised▾
Fortscale provides big data analytics & machine learning-based insider threat detection solutions. The solution employs big data based architecture and machine learning based adaptive algorithms to analyse the user behavior for detecting the threats. The product is application agnostic and supports integration with log systems, SIEM, VPN, SSH, Kerberos, AD & DHCP. Uses event-aggregation & data visualization to provide information over potential threats like compromised user credential, privileged user abuse, data exfiltration attempts, policy violations, snooping from risky accounts and automated crawling.
- Feb 2017Series A$7M
- Nov 2015Series A$4M
- Jun 2014Series A$10M
- Feb 2013Seed$2M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Cybersecurity coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Cybersecurity is moving in the United States
A read on the academic research around Cybersecurity — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 3,240 United States-affiliated papers.
- Purdue University West Lafayette85
- Northeastern University82
- Film Independent58
- Georgia Institute of Technology46
- DEVCOM Army Research Laboratory41
- Intrusion detection system94→301
- Anomaly detection30→107
- Key (lock)11→84
- Internet of Things2→61
- Artificial neural network2→57
- Intrusion detection system97→202
- Artificial neural network3→47
- Anomaly detection25→61
- Internet of Things1→33
- Support vector machine8→38
- Key (lock)6→39
- Intrusion detection system13→45
- Exploit9→30
- Malware6→26
- Adversarial system1→19
Where cybersecurity is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing cybersecurity patents in the United States
United States cybersecurity patent filing is accelerating — 237,304 filings from 8,000 assignees (2016–2025), led by IBM, Microsoft, Intel; annual filings 18790→23467.
- IBM27110
- Microsoft22601
- Intel12666
- Google8565
- Qualcomm7612
- Apple6755
- Hewlett Packard Development5761
- Capital One Services4646
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.