Top Cybersecurity Companies in Boston, MA
We ranked 5 cybersecurity companies in and around Boston, MA on client reviews, how many are verified, service focus and profile completeness. Includes companies in nearby Marlborough, Newington, NH and Somersworth, NH. Updated October 2026. How rankings work
Firms that assess, harden and monitor systems, and help companies meet security and compliance requirements.
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Massachusetts penetration testing firm offering research-driven pen tests, red teaming and security advisory, priced by days of hands-on effort.
No reviews yet
Marlborough, MA
- Cybersecurity
- Projects from
- $12,500+
Enterprise infrastructure, cloud and cyber resilience services with New England roots.
No reviews yet
Boston, MA
- Managed IT Services
- Cybersecurity
Somersworth managed and co-managed IT provider supporting business systems and security.
No reviews yet
Somersworth, NH
- Managed IT Services
- Cybersecurity
Boston IT support company providing managed IT, help desk, Microsoft 365 and Azure, and cybersecurity to small and mid-sized businesses since 2002.
No reviews yet
Boston, MA
- Managed IT Services
- Cybersecurity
Newington managed IT and cybersecurity provider serving organizations across northern New England.
No reviews yet
Newington, NH
- Managed IT Services
- Cybersecurity
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