Best Cybersecurity Companies in Sunnyvale, United States
The 86 best Cybersecurity companies in Sunnyvale, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Illumio.
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 Sunnyvale
| # | Company | Disclosed funding | Last round | Employees | Founded | Founder | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Illumio 🦄 Provider of breach containment and AI cloud detection and response | $566M | 60 mo ago | 380 380 → 916 (+141%) | 2013 | Andrew Rubin Co-Founder & CEO | 198 patents Microsegmentation and policy enforcement for cloud and data‑center workloads | 1 internship · 1 award |
| 2 | Good Technology Intelligent security solutions for communications, embedded systems, and critical event management | $355M | 140 mo ago | 1,142 | 1996 | Dave Whorton Founder | 152 patents Patents concentrated in electrical & electronics | — |
| 3 | CrowdStrike Provider of cloud-delivered solutions for endpoint and workload protection | $330M | 68 mo ago | 4,458 | 2011 | George Kurtz President / Ceo & Founder | 768 patents AI-driven endpoint threat detection and response, behavior analytics, and malware identification | 2 awards |
| 4 | Jumio Provider of AI-powered identity verification solutions | $196M | 63 mo ago | 103 | 2010 | Daniel Mattes Founder | 201 patents AI-driven identity document verification and fraud detection using multimodal biometric analysis | 1 launch · 2 partnerships |
| 5 | SafeBreach Solutions for vulnerability assessment and data breach prevention | $106M | 55 mo ago | 137 | 2014 | Guy Bejerano Co-Founder & CEO | 4 patents Virtualized sandboxing for real‑time detection and containment of malicious computer actions | 1 launch · 1 award |
| 6 | Cequence Cloud based platform offering API security solutions | $100M | 38 mo ago | 170 | 2014 | Ameya Talwalkar Founder and CEO | — | 1 launch |
| 7 | Narus Real time network traffic and analytics software | $95M | 203 mo ago | 89 | 1997 | — | 96 patents Deep packet inspection and application-layer traffic analysis for network security and monitoring | — |
| 8 | Centrify Provider of privileged access management solutions | $94M | 145 mo ago | 239 | 2004 | — | 24 patents Enterprise identity and access management, secure directory services, and zero‑sign‑on authentication | — |
| 9 | ShoreTel IP phone systems and unified communications solutions | $88M | 281 mo ago | 1,158 | 1996 | — | 234 patents Unified communications platforms integrating voice, video, and hybrid service provisioning | — |
| 10 | Proofpoint Provider of cybersecurity solutions, services, and training for enterprise protection | $86M | 82 mo ago | 2,649 2,649 → 5,196 (+96%) | 2002 | Sumit Dhawan CEO | 616 patents AI-driven email security, data loss prevention, and network threat detection solutions | 1 partnership · 1 award |
| 11 | RedSeal Provider of cyber-security analytics platform | $82M | 102 mo ago | 122 122 → 159 (+30%) | 2004 | — | 2 patents Dynamic network access control and policy enforcement for virtual servers and users | 1 job opening · 1 launch |
| 12 | CloudShield DPI based network threat detection solution | $68M | 225 mo ago | 83 | 2000 | — | 26 patents Network service provisioning, DNS resolution, and stateful traffic pattern analysis | — |
| 13 | Arcot Systems Authentication and fraud prevention solution for payments | $62M | 216 mo ago | 165 | 1997 | Ram Varadarajan Founder & CEO | — | — |
| 14 | Blue Coat Enterprise security solution suite | $55M | 240 mo ago | 1,071 | 1996 | Doug Crow Co-Founder | 134 patents Network security and traffic classification, content filtering, and application integration solutions. | — |
| 15 | Armorblox Provider of security solution for emails | $46M | 63 mo ago | 78 | 2017 | — | 26 patents Email and web data loss prevention, impersonation and spoof detection. | — |
| 16 | Bracket Computing Virtual infrastructure software for hybrid environment security | $46M | 128 mo ago | 74 | 2011 | — | 43 patents Secure virtualization infrastructure: boot integrity, resource orchestration, and network traffic management. | — |
| 17 | Netscreen Firewall and UTM appliance for network security | $46M | 300 mo ago | 4,958 | 1998 | Ken Xie Co-Founder & CTO | 9 patents Network security appliances integrating firewalls, authentication, and intrusion detection. | — |
| 18 | Fortinet Provider of cybersecurity solutions, services, and threat intelligence for enterprises | $39M | 267 mo ago | 3,126 | 2000 | Abida Nikam Co-Founder | 2,127 patents Network security and threat detection, including zero-trust, deception, and virtualized network functions. | — |
| 19 | uRoam Multicloud security and application delivery solutions ensuring fast, available, and secure apps | $38M | 290 mo ago | 3,387 | 1998 | Michael Herne Co-Founder & CEO | — | — |
| 20 | Blue Hexagon AI based automated network threat defense solution | $37M | 88 mo ago | 22 | 2017 | — | — | — |
| 21 | Marble Security Protecting mobile devices against malicious applications | $35M | 193 mo ago | 11 | 2005 | Dave Jevans Founder and Chairman | — | — |
| 22 | riskvision RiskVision is the industry’s first enterprise risk management system | $30M | 145 mo ago | 73 | 2005 | — | — | — |
| 23 | Code Green Networks Data Loss Prevention at Network, Endpoints and Cloud | $30M | 194 mo ago | 4 | 2004 | — | — | — |
| 24 | Niara Threat Discovery and Incident Investigation | $29M | 134 mo ago | 61 | 2013 | — | 13 patents Cybersecurity threat intelligence, data anonymization, and prioritized secure content storage. | — |
| 25 | OLOID Provider of passwordless authentication and workflow automation for frontline workers | $26M | 19 mo ago | — | 2019 | Madhu M Co-Founder & CTO | 8 patents Contactless smart‑card emulation and authentication systems for identity verification | — |
| 26 | Untangle Network threat management & firewall solution for SMB | $25M | 152 mo ago | 19 19 → 15 (-21%) | 2003 | — | — | — |
| 27 | A4Vision Provider of AI-based user identification and access control solutions | $25M | 255 mo ago | — | 2001 | Grant Evans CEO | 3 patents Biometric enrollment systems and 3D object detection/recognition for surveillance applications | — |
| 28 | Mu Dynamics Provider of network testing solutions provider | $24M | 217 mo ago | 920 | 2005 | Eric Hutchinson CEO | 704 patents Secure powered smart card payment and communication systems with magnetic stripe and audio interfaces | — |
| 29 | CloudKnox Security Cloud security platform for hybrid cloud environments | $23M | 72 mo ago | 42 | 2016 | Balaji Parimi Founder & CEO | — | — |
| 30 | PacketMotion User activity monitoring & NAC based insider threat detection | $21M | 186 mo ago | 12 | 2002 | — | 3 patents Network traffic monitoring devices and user authentication verification systems | — |
| 31 | Dasera Solutions for risk analysis and data security | $20M | 38 mo ago | 45 | 2014 | — | — | — |
| 32 | BlueFlag Security Provider of identity based cybersecurity solutions 48Funding top 33%AI top 35%Talent top 38%News top 45% All 6 signals ▾Fundingtop 33% AItop 35% Talenttop 38% Newstop 45% Marketbottom 37% Globalbottom 29% Funding: Raised $16.5M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) AI: Product described with: artificial intelligence, machine learning rank vs industry peers · Fliar Intelligence Index 48/100 | $16M | 4 mo ago | — | 2022 | Ken Schneider Co-Founder & CTO | — | — |
| 33 | ChatWork Cloud based task management platform for file sharing | $15M | 125 mo ago | 251 | 2012 | — | — | — |
| 34 | Trillium Secure Provider of cyber security for connected vehicles | $15M | 95 mo ago | 1 | 2014 | Keith McDonnell CEO | — | — |
| 35 | WideField Provider of identity threat protection across SaaS, cloud, and on-premises environments 57AI top 20%Growth top 28%Funding top 35%Talent top 38% All 7 signals ▾AItop 20% Growthtop 28% Fundingtop 35% Talenttop 38% Techbottom 46% Globalbottom 33% Marketbottom 31% AI: Classified as an AI company Growth: Web rank 50,000,000 → 10,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 57/100 | $11M | 3 mo ago | — | 2023 | Kartik Kumar Co-Founder & CTO | — | — |
| 36 | Soha Systems Application security for the cloud-enabled enterprise | $10M | 134 mo ago | 48 | 2013 | — | — | — |
| 37 | RapidFort Cloud based platform offering patch management solutions 50News top 30%Funding top 35%Moat top 37%Talent top 38% All 10 signals ▾Newstop 30% Fundingtop 35% Moattop 37% Talenttop 38% Techtop 40% Innovationtop 41% Patentstop 43% Growthtop 45% Globalbottom 37% Marketbottom 35% News: 4 BI events in 12 mo (of 6 tracked, 3 types) · Top themes: Funding, Capital raise Funding: Raised $9.4M across 2 rounds · 2 rounds over 4 yrs (0.5/yr) rank vs industry peers · Fliar Intelligence Index 50/100 | $9M | 4 mo ago | 28 | 2020 | Rajeev Thakur Co-Founder & CTO | 11 patents Instrumentation data acquisition and selection technologies for computer hardware systems | 1 award |
| 38 | wirex cube WireX Cube offers network forensics services that enables businesses to resolve cyber-attacks. | $9M | 131 mo ago | 19 | 2010 | — | — | — |
| 39 | Acuvity AI security and governance platform | $9M | 21 mo ago | — | 2023 | Satyam Sinha Co-Founder & CEO | — | — |
| 40 | Protego Networks SIEM appliance for security threat mitigation | $6M | 269 mo ago | — | 2002 | Chuck Robbins CEO | — | — |
| 41 | build.security Secure application authorization platform | $6M | 67 mo ago | 22 | 2020 | — | — | — |
| 42 | Juniper Networks Provider of AI-Native networking platforms, solutions, and services for various sectors | $6M | 52 mo ago | 4,323 4,323 → 9,058 (+110%) | 1996 | Pradeep Sindhu Founder | 10,102 patents Advanced routing, switching, and policy control for high‑performance data center networks | 1 launch |
| 43 | Intermedia Cloud-based unified communication management solution provider | $5M | 122 mo ago | 548 | 1995 | Michael Gold Chairman & CEO | 4 patents Graphical user interface elements for transitional screen portions and icon display | — |
| 44 | Janus Technologies Provider of a platform for endpoint security | $5M | 170 mo ago | 8 | 2011 | Sofin Raskin CEO | 59 patents Electronic access control hardware and software for secure door locking and authentication. | — |
| 45 | Clearedin Provider of tools to enhance email deliverability and security for businesses | $5M | 83 mo ago | 9 | 2017 | Deepak Kumar Co-Founder & CTO | — | — |
| 46 | Vidtel Cloud-based video conferencing service | $5M | 181 mo ago | — | 2008 | Scott Wharton Founder & CEO | — | — |
| 47 | Aurva Provider of data analytics services | $4M | 9 mo ago | — | 2022 | Krishna Bagadia Co-Founder & CTO | — | 1 award |
| 48 | Secure Things Developer of end-to-end automotive cybersecurity solutions | $4M | 52 mo ago | 17 | 2017 | Preeti Agarwal Co-Founder | — | — |
| 49 | Cymtec Network security and compliance solution provider | $3M | 158 mo ago | 11 | 2000 | Andrew Rubin CEO & Co-Founder | — | — |
| 50 | Discern Security AI based platform for the management of security policies | $3M | 33 mo ago | 21 | 2023 | Rohan Puri Co-Founder | — | 2 partnerships |
Top 12 Cybersecurity companies in Sunnyvale
#1
Series A · Sunnyvale, California · founded 2023$11.3Mraised▾
Provider of identity threat protection across SaaS, cloud, and on-premises environments. It delivers real-time detection for identities in action, for both human and non-human users. The platform connects to existing systems via API to collect signals and analyze identity risks. It detects risky login flows, authentication misconfigurations, and anomalies in user and machine behavior. Response can be automated through APIs.
- Mar 2026Series A—
- Oct 2025Series A$11.3M
#2
Series A · Sunnyvale, California · founded 2022$16.5Mraised▾
Provider of identity based cybersecurity solutions. It provides an identity-centric software development lifecycle security and governance platform that uses artificial intelligence and machine learning to protect developer identities and tools throughout the development lifecycle.
- Jan 2026Series A$16.5M
#3
Series A · Sunnyvale, California · founded 2020 · 28 employees$9.4Mraised▾
Cloud based platform offering patch management solutions. It provides a release management platform that offers solutions for securing and optimizing the cloud by eliminating vulnerabilities and managing patch management backlogs. It offers a solution that integrates seamlessly into existing workflows, targeting both development and security teams. The platform is available on the subscription based pricing model.
- Feb 2026Series A$42M
- Mar 2022Seed$9.4M
#4
Seed · Sunnyvale, California · founded 2022$4.3Mraised▾
Provider of data analytics services
- Sep 2025Seed$2.2M
- Apr 2023Seed$2.1M
#5
Series A · Sunnyvale, California · founded 2019$26.4Mraised▾
Provider of passwordless authentication and workflow automation for frontline workers. The company delivers passwordless multi-factor authentication, a no-code workflow engine, and a tablet-based time clock. It offers solutions for single sign-on, self-service password resets, shared logins, and continuous authentication. Industries served include manufacturing, retail, pharmaceuticals, contact centers, and healthcare. The company provides integrations with HRIS, SSO, and PACS systems.
- Oct 2024Series A$6M
- Nov 2021Series A$15.4M
- Aug 2019Seed$5M
#6
Acquired · Sunnyvale, California · founded 2023$9Mraised▾
AI security and governance platform. It enables enterprises to confidently adopt and manage GenAI applications, services, and plugins. The platform provides real-time monitoring, reputation scoring, and exposure tracking for AI-powered solutions, helping organizations ensuring secure use of artificial intelligence. It provides actionable insights and intelligence to optimize AI adoption and minimize risks.
- Sep 2024Seed$9M
#7
Illumio 🦄Series F · Sunnyvale, California · founded 2013 · 380 employees$566.4Mraised▾
Provider of breach containment and AI cloud detection and response. The platform identifies risks, detects attacks, and contains threats. It offers solutions for security leadership, infrastructure security, and security operations. The company provides resources such as a resource center, blog, certifications, events, glossary, podcasts, and webinars.
- Jun 2021Series F$225M
- Feb 2019Series E$65.2M
- Jun 2017Series D$125.1M
- Apr 2015Series C$100.5M
#8
Series C · Sunnyvale, California · founded 2014 · 170 employees$100Mraised▾
Cloud based platform offering API security solutions. The platform solutions enable developers and testers in discovering the vulnerability issues with APIs and perform remedial actions on the risks generated. It works by identifying and tracking multiple APIs irrespective of the location and generating vulnerability insights into them for defending the API attacks. It supports multiple integrations.
- Apr 2023Series C—
- Nov 2022Series C—
- Dec 2021Series C$60M
- Mar 2019Series B$17M
#9
Public · Sunnyvale, California · founded 2011 · 4458 employees$330Mraised▾
Provider of cloud-delivered solutions for endpoint and workload protection. The company offers protection against threats, using antivirus, device control, and firewall management. It provides endpoint detection and response, threat intelligence, and identity protection. The company delivers solutions for businesses with installation and operational concerns.
- Oct 2020Post IPO—
- Jun 2018Series E$200M
- Oct 2017Grant (prize money)$52.1K
- May 2017Series D$100M
#10
Acquired · Sunnyvale, California · founded 2010 · 103 employees$196Mraised▾
Provider of AI-powered identity verification solutions. It offers AI-based KYC and AML solutions for businesses. The platform provides solutions for customer onboarding, fraud protection, identity verification, transaction monitoring, document verification, and SMS based authentication. It caters to financial institutions, gaming sectors, retailers, and telecommunication.
- Mar 2021Series D$150M
- Aug 2016Series C$15M
- 2014Series B—
- Mar 2012Series B$25.5M
#11
Acquired · Sunnyvale, California · founded 1996 · 1142 employees$354.8Mraised▾
Intelligent security solutions for communications, embedded systems, and critical event management. The company provides secure communication solutions, including secure mobile calling, messaging, and file sharing, with high assurance security certifications. They offer secure digital workplace solutions, enabling secure work on any device, anytime, anywhere. Their critical event management solutions help organizations prepare, respond, and recover from critical events quickly. The company delivers embedded systems software products to increase reliability and reduce development costs for automotive and other industries. They offer transportation tracking solutions for trailers, containers, and equipment. Their cybersecurity focus includes secure communications and IoT. They provide endpoint management, secure mobile apps, and content collaboration solutions. The company offers solutions for connected autonomous vehicles, robotics, medical devices, aerospace, and rail. They provide support, training, and certifications. Their offerings include software, cloud based solutions, and development platforms.
- Sep 2014Series F$80M
- Dec 2013Series E$4.3M
- 2013Series E$60M
- May 2013Series D$27M
#12
Series D · Sunnyvale, California · founded 2014 · 137 employees$106.5Mraised▾
SafeBreach provides solutions for vulnerability assessment and data breach prevention. It provides virtual hacking simulations to discover weaknesses and vulnerabilities in the enterprise. It executes planned breach methods on the enterprise networks to access the security posture of the enterprise. The features of the product include attack prevention, identification of security gaps, risk mitigation & visualization, etc.
- Nov 2021Series D$53.5M
- Apr 2020Series C$19M
- May 2018Series B$15M
- Jul 2016Series A$15M
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
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.