The 36 largest cybersecurity companies in Massachusetts (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	Akamai Technologies akamai.com A global leader in internet infrastructure, Akamai powers and protects online experiences for billions of users daily through innovative solutions	Technology, Information and Internet	🇺🇸 Cambridge	10,647	n/a
2	Rapid7 rapid7.com Global leader in AI-powered managed cybersecurity operations, advancing organizations' cyber resilience through integrating security data, AI, and threat intelligence to reduce risk and disrupt attackers.	Computer and Network Security	🇺🇸 Boston	3,268	n/a
3	RSA Security rsa.com Offers identity-first solutions for security organizations. Supports modern authentication, lifecycle management, and identity governance across on-premises, cloud, and hybrid environments.	Computer and Network Security	🇺🇸 Burlington	2,793	n/a
4	CyberArk cyberark.com Global leader in identity security. Offers comprehensive security for human and machine identities across applications, workforces, cloud, and DevOps lifecycle.	IT System Custom Software Development	🇺🇸 Newton	2,712	1999
5	NETSCOUT netscout.com This company provides a Visibility Without Borders platform to help essential organizations manage complex networks, unlock insights, anticipate problems, and stay unstoppable	Software Development	🇺🇸 Westford	2,708	1984
6	Thrive thrivenextgen.com Empowering small and mid-market organizations to transform their technology into a strategic advantage, offering AI, cybersecurity, cloud, and MSP/MSSP solutions for innovation and growth.	IT Services and IT Consulting	🇺🇸 Foxborough	2,059	2000
7	ECI eci.com A global leader in technology solutions for the financial industry, empowering organizations worldwide to achieve new performance levels through innovative technology With offices globally	IT Services and IT Consulting	🇺🇸 Boston	1,916	1995
8	Snyk snyk.io Empowering organizations to build fast, stay secure, unleashing developer productivity, reducing business risk, accelerating secure software delivery, innovating without limits.	Computer and Network Security	🇺🇸 Boston	1,557	n/a
9	Black Duck blackduck.com Provides comprehensive software security solutions that manage risks, ensure compliance, and enable innovation for regulated, AI-driven environments.	Software Development	🇺🇸 Burlington	1,295	2024
10	Aura aura.com A mission-driven technology company focused on creating a safer internet for all, providing comprehensive digital security services trusted by millions worldwide	Software Development	🇺🇸 Boston	1,274	2017
11	Imprivata imprivata.com Provider of digital identity solutions for critical industries, addressing workflow, security, and compliance challenges by securing data and applications seamlessly	Software Development	🇺🇸 Waltham	1,257	n/a
12	Recorded Future recordedfuture.com Provides real-time threat intelligence from open, dark web, and technical sources, enabling clients to reduce risk and secure business operations.	Computer and Network Security	🇺🇸 Somerville	1,151	2009
13	STR str.us Utilizing technology for innovation, STR focuses on cybersecurity solutions, analytics tools, sensing technology, and safety systems to address complex societal challenges	Technology, Information and Internet	🇺🇸 Woburn	991	2010
14	3Com 3com.com Provider of high-performance networking and security solutions including data center products, intrusion prevention, and network access control for enterprises.	Computer Networking Products	🇺🇸 Marlborough	818	1978
15	Bitsight bitsight.com Provides precise insights from extensive cybersecurity data, enabling organizations to identify vulnerabilities, detect threats, and manage risks across their attack surface.	Software Development	🇺🇸 Boston	736	n/a
16	LastPass lastpass.com Helps individuals and organizations manage, protect access to AI, applications, and credentials from the browser, minimizing risk and ensuring productivity.	Computer and Network Security	🇺🇸 Boston	712	2008
17	OneSpan onespan.com Builds secure digital experiences and agreements using cybersecurity and e-signature solutions, protecting identities, mobile apps, and streamlining workflows for global enterprises.	Software Development	🇺🇸 Boston	667	n/a
18	Lookout lookout.com Secures mobile-driven enterprises by providing deep visibility into mobile endpoints, applications, network traffic, and AI interactions to detect threats and protect sensitive data.	Computer and Network Security	🇺🇸 Boston	515	2007
19	Veracode veracode.com Provides adaptive software security, helping organizations build and maintain secure software, identify exploitable risks, remediate vulnerabilities, and reduce security debt across the development lifecycle.	Computer and Network Security	🇺🇸 Burlington	504	2006
20	Tufin tufin.com AI-powered control plane for visualizing, managing, and automating security and compliance across hybrid network environments, including firewalls, cloud, SASE, SD-WAN, and microsegmentation.	Computer and Network Security	🇺🇸 Boston	504	2005
21	Devo devo.com Delivers a real-time security data platform, including data-powered threat detection, automated case management, autonomous investigations, and threat hunting, to enhance security operations.	Computer and Network Security	🇺🇸 Boston	500	2011
22	Aqua Security aquasec.com Pioneer in securing containerized cloud native applications from development to production, preventing and mitigating attacks in real time, integrating security from code to cloud.	Computer and Network Security	🇺🇸 Burlington	471	2015
23	Pentera pentera.io AI-powered Automated Security Validation for enterprise teams. Emulates real-world attacks across on-prem, cloud, and external environments to reveal exploitable vulnerabilities.	Computer and Network Security	🇺🇸 Burlington	469	2015
24	Continuum continuum.net Provides a proactive platform with integrated services for managed service providers, spanning security, backup, and monitoring, to help them grow.	Software Development	🇺🇸 Boston	457	2005
25	Bureau Veritas Cybersecurity cybersecurity.bureauveritas.com Expert cybersecurity partner for organizations. Identification of risks, defense strengthening, and compliance with cybersecurity standards and regulations. Global presence.	IT Services and IT Consulting	🇺🇸 Woburn	341	2000
26	Aware, Inc.aware.com A global provider of biometrics software products, services, and solutions including fingerprint, face, and iris recognition for various applications	Software Development	🇺🇸 Burlington	213	1986
27	NetWitness netwitness.com A global company offering scalable threat detection and response solutions with visibility, threat intelligence, analytics, and automation for efficient cybersecurity operations	Computer and Network Security	🇺🇸 Boston	196	1997
28	Immuta immuta.com This company enables organizations to securely access and protect their cloud data through sensitive data discovery, security controls, and data activity monitoring	Software Development	🇺🇸 Boston	195	2015
29	Black Kite blackkite.com Manages third-party cyber risk with AI, automating vendor monitoring and assessments, providing insights into ransomware, regulatory gaps, and financial exposure for proactive threat reduction.	Computer and Network Security	🇺🇸 Boston	167	2016
30	Acme Packet oracle.com Leader in session delivery network solutions, providing secure and reliable delivery of voice, video, data, and unified communications services worldwide	Telecommunications	🇺🇸 Bedford	140	2000
31	Push Security pushsecurity.com Advanced browser security tool providing real-time detection, response, and visibility into user activity, attacker behavior, and browser-level risks.	Computer and Network Security	🇺🇸 Boston	102	2021
32	PreVeil preveil.com Specializing in encryption for CMMC & ITAR compliance, PreVeil offers encrypted email and file sharing with end-to-end security for businesses and personal use	Software Development	🇺🇸 Boston	81	2015
33	Ermetic, a Tenable company ermetic.com Tenable Cloud Security offers comprehensive solutions for AWS, Azure, and GCP environments, including asset discovery, risk analysis, threat detection, compliance, and remediation tools	Computer and Network Security	🇺🇸 Boston	81	2019
34	Tessian proofpoint.com A leading cloud email security platform using machine learning to protect organizations against advanced threats and data loss, while coaching on security awareness	Computer and Network Security	🇺🇸 Boston	41	2013
35	Proinf proinf.com A leading cybersecurity and professional services provider offering managed IT services, infrastructure engineering, security services, and application modernization with certified professionals	IT Services and IT Consulting	🇺🇸 Boston	16	2011
36	SynergizeNOW synergizenow.com A leading IT company providing managed services, professional services, cloud solutions, security solutions, and procurement services for small and mid-market organizations	IT Services and IT Consulting	🇺🇸 Chelmsford	1	2017

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

The 36 largest cybersecurity companies in Massachusetts

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