Best Cybersecurity Companies in Boston, United States
The 137 best Cybersecurity companies in Boston, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Snyk.
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 Boston
| # | Company | Disclosed funding | Last round | Employees | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Snyk 🦄 Provider of a platform securing code, models, and agents in applications | $1.3B | 26 mo ago | 1,138 | 2015 | SentryApple iCloud MailGoogle Workspace+30 | — | — |
| 2 | Aura 🦄 Provider of online safety solutions for identity, privacy, and devices 82Tech top 14%Funding top 15%Customers top 19%Moat top 26% All 8 signals ▾Techtop 14% Fundingtop 15% Customerstop 19% Moattop 26% Producttop 27% Growthtop 29% Markettop 49% Globalbottom 46% Tech: 67 technologies across 7/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 Funding: Raised $672M across 5 rounds · 5 rounds over 7 yrs (0.7/yr) rank vs industry peers · Fliar Intelligence Index 82/100 | $672M | 14 mo ago | 21 | 2017 | WebflowApple iCloud MailAmazon Web Services+33 | — | 1 launch · 2 partnerships |
| 3 | Transmit Security 🦄 Customer identity management solution provider | $543M | 59 mo ago | 332 | 2014 | WordPressApple iCloud MailGoogle Workspace+36 | — | — |
| 4 | Fuze Cloud-based unified communication software provider | $543M | 65 mo ago | 771 | 2006 | — | 50 patents Unified communications platform enabling interoperable messaging, meeting recording, and network optimization | — |
| 5 | BitSight 🦄 Provider of cyber risk intelligence and exposure management solutions powered by AI | $398M | 57 mo ago | 396 396 → 724 (+83%) | 2011 | DrupalSentryZendesk+32 | — | 1 award |
| 6 | Immuta 🦄 Data access governance and data marketplace platform | $267M | 37 mo ago | 206 206 → 194 (-6%) | 2015 | WordPressSentryApple iCloud Mail+31 | 20 patents Privacy-preserving data access and query anonymization for relational databases | 1 job opening · 1 launch · 1 award |
| 7 | Tessian Provider of cybersecurity software for email collaboration and data protection | $182M | 58 mo ago | 222 | 2013 | — | — | — |
| 8 | 7AI Provider of an agentic security platform using AI agents for cybersecurity 57Funding top 19%AI top 20%Growth top 28%Talent top 38% All 10 signals ▾Fundingtop 19% AItop 20% Growthtop 28% Talenttop 38% Moattop 48% Globalbottom 46% Techbottom 43% Marketbottom 40% Innovationbottom 30% Patentsbottom 26% Funding: Raised $166M across 2 rounds · 2 rounds over 1 yrs (2.0/yr) AI: Classified as an AI company rank vs industry peers · Fliar Intelligence Index 57/100 | $166M | 6 mo ago | — | 2024 | HubSpot CMS HubFacebook LoginLinkedin Sign-in+19 | 2 patents Predictive analytics for customer journeys and targeted web advertising | — |
| 9 | Mend Provider of application security platform securing code, open source, containers, and AI | $121M | 62 mo ago | 302 | 2011 | WordPressMySQLRedis+31 | — | — |
| 10 | Onapsis Provider of cybersecurity solutions for business-critical applications like SAP and Oracle | $113M | 68 mo ago | 111 | 2009 | WordPress Block EditorWordPressSentry+36 | 46 patents Enterprise application security: access control, segregation of duties, runtime integrity, and anomaly detection. | 1 partnership |
| 11 | Rapid7 Provider of cybersecurity solutions for exposure management, threat intelligence, and response | $92M | 94 mo ago | 2,623 2,623 → 3,279 (+25%) | 2000 | SkilljarApple iCloud MailGoogle Workspace+27 | 469 patents Cloud security monitoring, vulnerability assessment, and attack path visualization for cloud assets | — |
| 12 | Tidelift Provider of code security and quality platform for developers | $74M | 48 mo ago | 73 | 2017 | HubSpot CMS HubNginxAmazon Web Services+25 | — | — |
| 13 | Threat Stack Provider of intrusion detection platform for cloud, hybrid-cloud, and on-premise environments | $72M | 105 mo ago | 87 | 2012 | — | 25 patents Cloud infrastructure security monitoring of control-plane and OS events/data access | — |
| 14 | SimSpace Cyber risk management platform to validate cyber security | $70M | 7 mo ago | 238 238 → 197 (-17%) | 2015 | WordPressApple iCloud MailGoogle Workspace+37 | — | 1 job opening · 1 partnership · 1 award |
| 15 | ObserveIT Insider threat management solution | $69M | 95 mo ago | 79 | 2006 | — | 16 patents Enterprise data loss prevention, secure multi‑tenant SaaS, and attribute‑based access control solutions. | — |
| 16 | Sea Street Provider of network defense and firewall as a service solutions | $65M | 32 mo ago | 38 | 2012 | — | — | — |
| 17 | jSonar Big Data warehouse platform | $50M | 72 mo ago | 14 | 2013 | — | 18 patents Scalable cloud data ingestion pipelines with high‑volume classification and organization | — |
| 18 | Apperian Mobile application management and White label app store solution | $42M | 129 mo ago | 67 | 2009 | — | 29 patents Enterprise mobile device management and cache performance optimization for distributed applications | — |
| 19 | Hummingbird Provider of an AI-powered platform for financial risk and compliance management | $42M | 54 mo ago | 120 | 2016 | HubSpot CMS HubSalesforceAmazon Web Services+21 | 13 patents Patents concentrated in health & consumer products | 2 launchs |
| 20 | Ramp Enterprise video management solutions provder | $42M | 164 mo ago | 32 | 2006 | — | 15 patents Optimizing secure, scalable video streaming and speech-to-text analytics for web platforms | — |
| 21 | RiskRecon Provides solutions for third party, supply chain and enterprise risk management | $40M | 94 mo ago | 70 | 2015 | HubSpot CMS HubFacebook LoginLinkedin Sign-in+20 | 5 patents Automated monitoring and assessment of information security effectiveness for cyber risk management | — |
| 22 | Seven AI Provider of cybersecurity suite solutions | $36M | 24 mo ago | — | 2023 | — | — | — |
| 23 | Cygilant Cloud-based SIEM, security analytics and incident response platform | $35M | 87 mo ago | 74 | 2001 | — | — | — |
| 24 | Ox Security Offering endpoint security solution via vulnerability assessment | $34M | 13 mo ago | 76 | 2021 | WordPress Block EditorWordPressMySQL+36 | 226 patents Patents concentrated in computing, sensing & instrumentation | — |
| 25 | Black Kite Cloud based cyber risk and vulnerability assessment solutions | $33M | 56 mo ago | 110 | 2016 | WordPressSentryApple iCloud Mail+36 | — | — |
| 26 | Manta Network Developer of modular blockchain solutions for zero-knowledge applications and decentralized finance | $32M | 35 mo ago | 39 | 2020 | Node.jsHeadless UITailwind CSS+17 | — | — |
| 27 | InAuth Digital device intelligence for risk detection and analysis | $31M | 83 mo ago | 7 | 2010 | — | 24 patents Secure device authentication and trusted communication across multiple channels | — |
| 28 | PreVeil Cloud-based software for document collaboration and file sharing | $27M | 43 mo ago | 44 44 → 83 (+89%) | 2015 | WordPress Block EditorWordPressMySQL+34 | 3 patents Secure data sharing protocols for wireless networks, focusing on encrypted transmission and access control. | 1 partnership |
| 29 | Tausight AI and cloud-based platform for healthcare data protection | $26M | 34 mo ago | 30 | 2018 | — | 4 patents Secure continuous health data risk assessment and resilient software/resource management | — |
| 30 | Pwnie Express Threat detection of IoT & BYOD devices in enterprise | $26M | 103 mo ago | 40 | 2010 | — | — | — |
| 31 | CyberSaint Security Cloud-based cyber risk assessment platform | $25M | 27 mo ago | 40 40 → 28 (-30%) | 2016 | HubSpot CMS HubApple iCloud MailGoogle Workspace+34 | — | 2 partnerships |
| 32 | JetPatch Provider of automated server patch, software distribution, and lifecycle management solutions. | $24M | 92 mo ago | 2 | 2010 | WordPressMySQLMariaDB+45 | — | — |
| 33 | Barkly Endpoint security using behavioral analytics | $23M | 109 mo ago | 15 | 2013 | — | — | 1 launch |
| 34 | Vaultive Cloud data security | $19M | 137 mo ago | 34 | 2009 | — | — | — |
| 35 | Edgewise Networks Zero trust cloud security solutions provider for modern enterprises | $18M | 84 mo ago | 21 | 2016 | — | — | — |
| 36 | Zilla Security Offering cloud data and access security | $18M | 46 mo ago | 29 | 2018 | WordPressMySQLPHP+28 | — | 1 launch |
| 37 | SoWork Cloud based immersive virtual events management solution provider | $15M | 56 mo ago | 28 | 2004 | SanityNode.jsTailwind CSS+19 | — | — |
| 38 | OneLayer Provider of security and asset management for private cellular networks | $15M | 8 mo ago | 10 | 2021 | WordPressApple iCloud MailMicrosoft 365+31 | — | 1 partnership |
| 39 | Sym Solutions for the creation of security workflows | $12M | 68 mo ago | 35 | 2020 | — | — | — |
| 40 | Core Security Vulnerability detection using penetration testing and access management | $11M | 126 mo ago | 73 | 1996 | DrupalMariaDBPHP+32 | — | — |
| 41 | empow Provider of AI and cloud-based open-source SIEM for threat detection and response | $10M | 98 mo ago | 25 | 2014 | — | — | — |
| 42 | Optio Labs Mobile security insight platform for context based threat response | $10M | 147 mo ago | 13 | 2012 | — | 31 patents Mobile device security policy enforcement for native code execution and context-aware data synchronization | — |
| 43 | Rezonate Platform offering cloud infrastructure security | $9M | 42 mo ago | 25 | 2021 | — | — | — |
| 44 | Nebulock Provider of agentic threat hunting platform automating complex threat detection | $8M | 10 mo ago | — | 2024 | WebflowApple iCloud MailGoogle Workspace+16 | — | — |
| 45 | Salesroom Online video conferencing platform for sales teams | $8M | 47 mo ago | 20 | 1998 | — | — | — |
| 46 | BastionZero Provides VPN for secure remote access internet solutions | $7M | 51 mo ago | 15 | 2017 | WebflowAmazon Web ServicesHubSpot+23 | 5 patents Zero‑trust, split‑key authentication for secure network access control | — |
| 47 | Perygee Provider of a platform for embeddable IoT security solutions | $6M | 43 mo ago | 7 | 2019 | — | — | — |
| 48 | FiVerity AI based cybersecurity solutions for financial institutions | $6M | 19 mo ago | 21 | 2017 | HubSpot CMS HubBugHerdGlide.js+17 | — | 1 launch |
| 49 | Realm Security Provider of cybersecurity suite solutions | $5M | 6 mo ago | — | 2024 | WordPressMySQLPHP+27 | — | — |
| 50 | Gataca Provider of digital identity verification and authentication platform for organizations | $1M | 30 mo ago | 10 | 2018 | Apple iCloud MailGoogle WorkspaceNode.js+17 | — | — |
Top 12 Cybersecurity companies in Boston
#1
Series A · Boston, Massachusetts · founded 2024$166Mraised▾
Provider of an agentic security platform using AI agents for cybersecurity. The platform offers capabilities including incident management, investigations, threat detection, automated response, and threat hunting. It provides tools for alert processing, data enrichment, and investigation summaries. The platform also offers features such as real-time dashboards, reporting, and custom workflow building.
- Dec 2025Series A$130M
- Feb 2025Seed$36M
#2
Aura 🦄Series G · Boston, Massachusetts · founded 2017 · 21 employees$672Mraised▾
Provider of online safety solutions for identity, privacy, and devices. The company offers credit monitoring, identity theft protection, and suspicious transaction alerts. It provides a privacy assistant, parental controls, and cyberbullying protection. The company delivers a virtual private network, antivirus software, and a password manager.
- Mar 2025Series G$140M
- Mar 2025Conventional Debt—
- Dec 2022Series F$22M
- Oct 2021Series F$205M
#3
Series A · Boston, Massachusetts · founded 2015 · 238 employees$70Mraised▾
Cyber risk management platform to validate an organizations cybersecurity process and technology. The company was founded in 2015 by experts from the US Cyber Command and MITs Lincoln Laboratory, SimSpace combines the highest fidelity cyber ranges and attack content with user and adversary emulation techniques. It also provides individual training exercises, attack simulations, mission rehearsals, and product evaluations that leverage its cyber range, SimSpace delivers quantitative and actionable insights into how an organization can protect critical assets against lethal cyber threats.
- Oct 2025Series A$39M
- Oct 2025Conventional Debt—
- Dec 2023Series A$45M
- Jul 2022Conventional Debt$10M
#4
Series A · Boston, Massachusetts · founded 2021 · 10 employees$14.7Mraised▾
Provider of security and asset management for private cellular networks. This platform enables visibility, segmentation, and threat prevention for devices connected to private wireless infrastructure. It facilitates device onboarding, persistent tracking, and geofencing capabilities to manage connected assets. The technology integrates with existing network architectures to enforce security policies at the device level across various industrial environments.
- Oct 2025Series A$28M
- Sep 2022Seed$6.5M
- Mar 2022Seed$8.2M
#5
Series A · Boston, Massachusetts · founded 2024$5Mraised▾
Provider of cybersecurity suite solutions. It offers security data into a unified, intelligent entity, leveraging artificial intelligence and cutting-edge data processing technology. The companys platform provides a robust security solution, that offers an additional layer of protection for users and data. It enables organizations to manage and secure the digital assets.
- Dec 2025Series A$2M
- Oct 2025Series A$15M
- Sep 2024Seed$5M
#6
Series B · Boston, Massachusetts · founded 2021 · 76 employees$34Mraised▾
Offering endpoint security solution via vulnerability assessment. Provides an end to end security solution that turns the software supply chain from a black box, to a source of business insights and valuable security information and puts software supply chain security expertise in any devops toolkit.
- May 2025Series B$60M
- Aug 2023Seed—
- Sep 2022Seed$34M
#7
Snyk 🦄Series G · Boston, Massachusetts · founded 2015 · 1138 employees$1.3Braised▾
Provider of a platform securing code, models, and agents in applications. The platform offers tools for application security, software supply chain security, and fixing vulnerabilities. It provides resources such as a vulnerability database, security education, and documentation. The platform helps organizations secure development, reduce business risk, and accelerate software delivery.
- Apr 2024Series G$25M
- Jan 2023Series G$25M
- Dec 2022Series G$196.5M
- Mar 2022Series F$4.8M
#8
Seed · Boston, Massachusetts · founded 2024$8.5Mraised▾
Provider of agentic threat hunting platform automating complex threat detection. The platform uses AI agents to identify patterns related to lateral movement, insider threats, and credential misuse. It integrates with existing security information and event management, endpoint detection and response, and identity and access management systems. The platform offers natural language querying for investigations and simulated attack scenarios for detection rule validation.
- Jul 2025Seed$8.5M
#9
Series A · Boston, Massachusetts · founded 2017 · 21 employees$6Mraised▾
AI based cybersecurity solutions for financial institutions. It offers solutions to banks, credit unions, payment institutions, online lenders, and more. Its features are detecting financial and cyber frauds, identity verification, and more. It offers solutions such as SynthID Detect for identity fraud detection, Portfolio Analyzer for identification of synthetic identity, and more.
- Nov 2024Series A$8.5M
- Apr 2023Seed$4M
- Mar 2021Seed$2M
- Dec 2018Grant (prize money)—
#10
Immuta 🦄Series E · Boston, Massachusetts · founded 2015 · 206 employees$267Mraised▾
Data access governance and data marketplace platform. The platform unifies policy setting, visibility, and auditing across multiple platforms. It offers metadata registry, data discovery, policy entitlements, and unified audit functionality. The platform facilitates data product publishing, discovery, and access approval. It provides data access control through a single interface. It provides real-time reports on data governance and compliance by tracking actions against enterprise data.
- May 2023Series E—
- Feb 2023Series E—
- Jun 2022Series E$100M
- May 2021Series D$90M
#11
Seed · Boston, Massachusetts · founded 2023$36Mraised▾
Provider of cybersecurity suite solutions
#12
BitSight 🦄Series E · Boston, Massachusetts · founded 2011 · 396 employees$398Mraised▾
Provider of cyber risk intelligence and exposure management solutions powered by AI. The company offers solutions for exposure management, third-party risk management, and cyber threat intelligence. It provides services such as continuous monitoring, vendor risk assessment, and security ratings. The company’s platform helps organizations detect, prioritize, and mitigate threats across their attack surface. It offers governance and reporting tools to improve security posture.
- Sep 2021Series E$250M
- Jun 2018Series D$60M
- Sep 2016Series C$40M
- Jun 2015Series B$23M
Funding & investor landscape
Ascent Venture Partners3 roundsNotable 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
What Boston researches in cybersecurity
Boston University, UMass Boston, and Boston College lead optimistic cybersecurity research (mean stance 0.35) focused on network intrusion detection, anomaly detection, and secure e-voting, with breakthroughs dominating recent output.
- Boston University6
- University of Massachusetts Boston4
- Boston College2
- Boston Engineering1
- Urban College of Boston1
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.