Best Cybersecurity Companies in Seattle, United States
The 108 best Cybersecurity companies in Seattle, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: XBOW.
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 Seattle
| # | Company | Disclosed funding | Last round | Stage | Employees | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | XBOW AI-powered autonomous penetration testing platform 69Funding top 12%Growth top 35%Moat top 40%Tech top 42% All 8 signals ▾Fundingtop 12% Growthtop 35% Moattop 40% Techtop 42% AItop 45% Talenttop 45% Globalbottom 48% Marketbottom 44% Funding: Raised $251M across 5 rounds · 5 rounds over 2 yrs (2.5/yr) Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 69/100 | $251M | 1 mo ago | Series C | 40 | 2024 | WebflowApple iCloud MailSalesforce+16 | — | — |
| 2 | ExtraHop Provider of IT operations analytics and network incident response solutions | $162M | 29 mo ago | Acquired | 688 688 → 765 (+11%) | 2007 | TurbopackSentryApple iCloud Mail+28 | — | — |
| 3 | Protect AI Provider of AI-based ML security solutions | $129M | 22 mo ago | Acquired | 26 | 2022 | HubSpot CMS HubApple iCloud MailGoogle Workspace+17 | 5 patents Radon and environmental contaminant detection sensors for air quality monitoring | — |
| 4 | Aventail Corporation SSL VPN remote access solution | $113M | 299 mo ago | Acqui-Hired | 13 | 1996 | — | 50 patents Network security and traffic management for remote access and load‑balanced routing | — |
| 5 | SecureW2 Certificate-based security platform delivering adaptive access control and passwordless authentication | $80M | 32 mo ago | Series C | 54 54 → 131 (+143%) | 2014 | WordPressMySQLPHP+35 | — | — |
| 6 | Versive Provider of AI based cyber analytics platform for threat prioritization | $57M | 106 mo ago | Acqui-Hired | 135 | 2012 | — | 2 patents AI-driven behavioral risk assessment tools for violence, extremism, and bias propensity | — |
| 7 | Tempered Network security solutions provider | $56M | 68 mo ago | Acquired | 31 | 2012 | Apple iCloud MailMicrosoft 365Salesforce+8 | — | — |
| 8 | Panopto Cloud-based video conferencing management software provider | $47M | 117 mo ago | Series B | 138 138 → 194 (+41%) | 2007 | WordPress Site EditorWordPressSentry+27 | 19 patents Advanced video encoding, composite generation, and segmented streaming management solutions. | 3 job openings · 1 award |
| 9 | Centri Data Compression and encryption based data protection solution | $26M | 141 mo ago | Acqui-Hired | 15 | 2009 | — | 13 patents Network security, remote monitoring, and data compression for telecom and optical communication systems. | — |
| 10 | Mason America Enterprise smart device solutions for healthcare, logistics, retail, and more | $25M | 82 mo ago | Series A | 107 | 2015 | Webflow EcommerceWebflowApple iCloud Mail+16 | — | — |
| 11 | Lockdown Networks Vulnerability assessment & NAC solution for enterprise | $23M | 223 mo ago | Acqui-Hired | 25 | 2001 | — | — | — |
| 12 | Dropzone AI Provider of an AI-powered platform for security alert investigation and triage | $20M | 11 mo ago | Series B | — | 2023 | WebflowAmazon Web ServicesGSAP+19 | 10 patents Automated cybersecurity threat detection, analysis, and security environment surveying systems. | 1 launch · 1 award |
| 13 | Cozy Finance Decentralized P2P security solutions for smart contracts | $17M | 60 mo ago | Series A | 6 | 2020 | — | — | — |
| 14 | Cloudentity Cloud governance automation solutions provider | $15M | 69 mo ago | Acquired | 40 | 2014 | Node.jsAnimate.cssReact+9 | 9 patents Cloud-based identity and access management for data streams and microservice architectures | — |
| 15 | Vouched Provider of identity verification solutions for multiple industries and AI agents | $14M | 9 mo ago | Series A | 38 | 2018 | HubSpot CMS HubBugHerdZendesk+29 | — | 1 partnership |
| 16 | Icebrg Stealth mode startup to provide next generation defense | $12M | 123 mo ago | Acqui-Hired | 50 | 2014 | — | 6 patents Anonymized network traffic collection for threat detection and monitoring. | — |
| 17 | NetMotion Mobile security and enterprise VPN solutions provider | $11M | 116 mo ago | Acquired | 140 | 2001 | — | — | — |
| 18 | Shujinko Security solution for cloud | $10M | 80 mo ago | Series A | 6 | 2018 | — | 2 patents Automated cloud compliance provisioning and digital forensic evidence collection systems | — |
| 19 | DarkLight AI-based software for active cyber defense and trusted information sharing | $10M | 63 mo ago | Series A | 20 | 2014 | — | — | — |
| 20 | Shield Compliance Provider of risk and compliance management solutions | $10M | 79 mo ago | Series A | 23 23 → 36 (+57%) | 2015 | Cart FunctionalityWix eCommerceWix+24 | — | 1 partnership |
| 21 | Spot Cloud-based unified business communication software | $7M | 45 mo ago | Series A | 9 | 2021 | Node.jsTypeScriptGraphQL+19 | 13 patents Selective heating control in electromagnetic ovens and AI-driven venue monitoring systems | — |
| 22 | Rubica Privacy protection solution | $7M | 109 mo ago | Deadpooled | 24 | 2016 | — | — | — |
| 23 | Loti AI based solutions for account takeover prevention | $7M | 23 mo ago | Seed | — | 2022 | — | — | 1 launch |
| 24 | Voodle Cloud-based enterprise video sharing software provider | $6M | 66 mo ago | Series A | 1 | 2002 | — | 2 patents Real-time multimedia search and dynamic assembly of audio-visual results | — |
| 25 | Pendulum AI-powered threat detection solutions | $6M | 53 mo ago | Seed | — | 2021 | WebflowThree.jsVimeo+12 | — | — |
| 26 | Trusted Key Digital identity solution to verify and authenticate identities using blockchain technology | $6M | 86 mo ago | Acqui-Hired | 15 | 2016 | — | — | — |
| 27 | Privacy Dynamics Cloud-based data governance management software provider | $6M | 54 mo ago | Seed | 12 | 2018 | — | — | — |
| 28 | Roby Cloud-based platform for employee engagement | $5M | 44 mo ago | Series A | 19 | 2018 | — | — | — |
| 29 | Stabilitas Cloud based cyber and physical security and risk intelligence solution | $5M | 92 mo ago | Acquired | 15 | 2013 | — | — | — |
| 30 | Edera AI-based platform offering security and survillance technology | $5M | 16 mo ago | Series A | — | 2024 | WebflowApple iCloud MailGoogle Workspace+15 | — | — |
| 31 | NuID Decentralised authentication and identity management platform | $4M | 90 mo ago | Series A | 7 | 2017 | — | 7 patents Decentralized credential storage and cross‑institution digital authentication infrastructure. | — |
| 32 | Talko Provider of collaborative voice communication solutions | $4M | 162 mo ago | Acqui-Hired | 11 | 2012 | — | 25 patents Patents concentrated in electrical & electronics | — |
| 33 | Tensor9 Providing data security solutions for software and AI vendors | $4M | 14 mo ago | Seed | — | 2023 | — | — | — |
| 34 | BrightCanary Offering parental control solutions | $4M | 44 mo ago | Series A | 5 | 2022 | WordPressMySQLPHP+19 | — | — |
| 35 | Forma Vision Cloud-based software for enterprise communication | $4M | 43 mo ago | Series A | 12 | 2016 | — | — | — |
| 36 | YData AI based platform for data anonymization | $3M | 56 mo ago | Seed | 39 | 2019 | HubSpot CMS HubAmazon Web Servicescore-js+14 | 2 patents Scalable synthetic data generation for machine‑learning model training | — |
| 37 | Haute Secure Domain registration and hosting services with technical support and control panel | $2M | 207 mo ago | Acqui-Hired | — | 2006 | — | — | — |
| 38 | lifeID Blockchain-based identity solutions for secure, privacy-focused digital interactions | $2M | 99 mo ago | Seed | 2 | 2017 | — | — | — |
| 39 | Mobilisafe Device vulnerability scanner | $1M | 180 mo ago | Acquired | — | 2010 | — | — | — |
| 40 | Payscore Provider of income verification and authentication solutions for lenders | $1M | 24 mo ago | Seed | 11 | 2017 | WebflowSentryApple iCloud Mail+21 | — | — |
| 41 | Ambit VPN solutions provider | $1M | 36 mo ago | Late Stage | 9 | 2019 | WebflowYouTubeSwiper+12 | 23 patents Patents concentrated in computing, sensing & instrumentation | — |
| 42 | Tor Provider of internet privacy and browser security solutions | $750K | 166 mo ago | Funding Raised | 42 | 2006 | Cart FunctionalityPythonDjango+11 | — | — |
| 43 | Tiercel Security Solutions Web-based mobile-centric communications platform | $385K | 137 mo ago | Deadpooled | — | 2011 | — | — | — |
| 44 | Koverse Provider of mission, IT, engineering, and professional services and solutions | $199K | 73 mo ago | Acquired | 59 | 2012 | — | 5 patents Data organization, optimization, and analytics for database management systems | — |
| 45 | Digitsec Provider of application security testing platform for Salesforce and B2C Commerce | $150K | 42 mo ago | Seed | 12 | 2010 | WordPressMySQLPHP+32 | 3 patents Cloud SaaS configuration security analysis and vulnerability assessment for network services | 1 launch |
| 46 | Tatango SMS software for nonprofit fundraising, engaging donors, and elevating impact | $145K | 167 mo ago | Seed | 41 41 → 32 (-22%) | 2007 | WordPressMySQLPHP+31 | — | — |
| 47 | Derisk Platform offering key management toolkit using Multi-Party Computation (MPC) | $125K | 48 mo ago | Seed | 2 | 2022 | — | — | — |
| 48 | Matano Cloud-native SIEM platform | $125K | — | Seed | — | 2022 | — | — | — |
| 49 | atCipher Encryption based zero-knowledge key management solutions | $118K | 130 mo ago | Deadpooled | 4 | 2013 | — | — | — |
| 50 | Syzen Analytics Predictive Retail Analytics software | $100K | 147 mo ago | Deadpooled | — | 2014 | — | — | — |
Top 12 Cybersecurity companies in Seattle
#1
Series C · Seattle, Washington · founded 2024 · 40 employees$251.1Mraised▾
AI-powered autonomous penetration testing platform. The platform identifies and exploits vulnerabilities in web applications. It uses AI to execute commands, analyze outputs, and refine its approach without human intervention. It allows users to discover and exploit vulnerabilities, representing a significant advancement in protecting software and infrastructure from cyber threats.
- May 2026Series C$35M
- Mar 2026Series C$120.9M
- Jun 2025Series B$75M
- Jul 2024Seed$20M
#2
Series A · Seattle, Washington · founded 2018 · 38 employees$13.9Mraised▾
Provider of identity verification solutions for multiple industries and AI agents. The company delivers identity verification, fraud detection, data verification, and compliance. It offers tools for healthcare, financial services, automotive, real estate, and hospitality sectors. The company provides application programming interfaces, software development kits, and JavaScript plug-ins.
- Sep 2025Series A$17M
- Mar 2023Series A$6.3M
- Aug 2021Angel$4.5M
- Dec 2020Seed$3M
#3
Series B · Seattle, Washington · founded 2023$20.4Mraised▾
Provider of an AI-powered platform for security alert investigation and triage. The platform offers automated analysis of security alerts, aiming to reduce investigation time and improve efficiency. It integrates with existing security tools to provide insights and streamline security operations. The platform supports various alert types, including phishing, endpoint, network, and cloud security alerts.
- Jul 2025Series B$37M
- Apr 2024Series A$16.9M
- Aug 2023Seed$3.5M
#4
Acquired · Seattle, Washington · founded 2022 · 26 employees$129.3Mraised▾
Provider of AI-based ML security solutions. It offers enterprises to safeguard the machine learning models with a security platform. It offers turnkey AI and ML security that does not add unnecessary complexity to models and does not require access to raw data and algorithms.
- Jul 2024Series B$80.8M
- Jul 2023Series A$35M
- Dec 2022Seed$13.5M
#5
Acquired · Seattle, Washington · founded 2007 · 688 employees$161.6Mraised▾
Provider of IT operations analytics and network incident response solutions. Provides real time operational intelligence for complex, active production environments. The system equips IT groups with real time visibility on the application delivery chain comprising the network, web, VDI, API and middleware, database, and storage tiers down to individual sessions, flows, and transactions.
- Jan 2024Series D$100M
- May 2014Series C$41M
- Apr 2011Series B$14M
- Apr 2009Series A$5.1M
#6
Seed · Seattle, Washington · founded 2023$4Mraised▾
Providing data security solutions for software and AI vendors. Its primary focus is to enable vendors to run the software inside the customers cloud environments, ensuring that sensitive data never leaves the customers infrastructure and the vendors.
- Mar 2025Seed$4M
#7
Series A · Seattle, Washington · founded 2024$5Mraised▾
AI-based platform offering security and survillance technology. It offers security solution, ensuring container escapes. It offers product serves as an isolation engine, utilizing a type-1 hypervisor to secure compute workloads while maintaining performance.
- Jan 2025Series A$15M
- Aug 2024Series A$5M
#8
Series C · Seattle, Washington · founded 2014 · 54 employees$80Mraised▾
Certificate-based security platform delivering adaptive access control and passwordless authentication. It provides a cloud-native trust layer for condition-aware authentication and provisioning. The platform offers dynamic PKI, automated certificate management, and cloud RADIUS for scalable network authentication across multiple operating systems. Solutions cater to various markets, including enterprise, education, and government, modernizing network authentication with fast, reliable access for Wi-Fi and wired networks. It enables certificate-based ZTNA/VPN for remote access, guest Wi-Fi provisioning, device trust for SSO, and passwordless desktop logon. The platform extends to non-human identities, issuing scoped certificates for scripts and containers. It integrates with existing security infrastructure, offering seamless interoperability and deployment flexibility, whether cloud-bound or cloud-native. The platform supports agentless certificate onboarding, policy-backed validation, and dynamic trust decisions, ensuring continuous trust enforcement and measurable results in security, performance, and operational efficiency. It is a SaaS platform.
- Oct 2023Series C$80M
#9
Seed · Seattle, Washington · founded 2022$6.7Mraised▾
AI based solutions for account takeover prevention
#10
Acquired · Seattle, Washington · founded 2012 · 31 employees$56.1Mraised▾
Tempered is a network security solutions provider. The product offers protection against network attacks with secure gateways. The features of the product include the deployment and maintenance of separate networking and security policies for on-premises or cloud-based. It also provides encryption, cloud gateways, multi-factor authentication (MFA), end-to-end encryption, secure access, etc.
- Oct 2020Series C$6.7M
- May 2019Series C$17M
- Dec 2017Series B$7M
- Aug 2016Series B$10M
#11
Acqui-Hired · Seattle, Washington · founded 1996 · 13 employees$113Mraised▾
Aventail Corporation is a provider of SSL VPN remote access solution. Its products include access control management and endpoint security that aloows cache cleaning and encrypted workspaces easily. The strategy behind the acquisition is to increase the market share of SonicWALL.
- Jul 2001Series E$55M
#12
Acqui-Hired · Seattle, Washington · founded 2012 · 135 employees$57.2Mraised▾
Provider of AI based cyber analytics platform for threat prioritization. It provides machine-learning based APT, insider threat, malicious domain, and data exfiltration attempts detection to the organizations. It offers Product Versive Security Engine which is an automated kill-chain cycle and adversary campaign priortization platform which assists incident responders and security analysts to plan and mitigate threat response.
- Aug 2017Series C$12.7M
- Sep 2015Series B$13.5M
- Oct 2014Series B$13.6M
- May 2014Series B$21M
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
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.