Company lists · Data refreshed October 2026

Top 25 Cybersecurity services firms based in Boston, United States

Name: Cybersecurity services firms based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 61 companies tracked

RevenueBase identified 61 company matches for cybersecurity services firms associated with Boston, United States as of October 2026 and tracks 4,614 professional contacts across them, including 2,016 with verified work emails. Across the United States, New York is the largest hub for this category (276 companies); Boston has 61.

This list covers company matches for cybersecurity services firms associated with Boston, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built

61Companies

4,614Contacts tracked

2,016Verified emails

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The 25 largest cybersecurity services firms based in Boston, United States

Ranked by team size

Top 25 of 61 company matches for cybersecurity services firms based in Boston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Rapid7	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,822 contacts →
	Exact match “Rapid7, Inc.(NASDAQ: RPD) is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations’ cyber resilience.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Bitsight	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	501-1,000	752 contacts →
	Exact match “Bitsight is the global leader in cyber risk intelligence, leveraging advanced AI to empower organizations with precise insights derived from the industry’s most extensive external…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	IANS	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	51-200	327 contacts →
	Exact match “For the security practitioner caught between rapidly evolving threats and demanding executives, IANS Research is a clear-headed resource for decision-making and articulating risk.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Cynet Security	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	201-500	309 contacts →
	Exact match “Cynet’s unified, AI-powered cybersecurity platform brings together a full suite of security capabilities in a single, simple solution, backed by 24x7 SOC support.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	EIQ Networks	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	51-200	57 contacts →
	Exact match “EiQ, a pioneer in hybrid security as a service, is transforming how mid-market organizations build enterprise-class security programs.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	CORK	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	11-50	34 contacts →
	Exact match “Cork Cyber delivers cyber risk intelligence and resilience for MSPs.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Abusix, INC	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	11-50	31 contacts →
	Exact match “At Abusix, we empower businesses, ISPs, and email service providers with cutting-edge security solutions to safeguard digital infrastructure.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Bradford Networks	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	51-200	22 contacts →
	Exact match “Bradford Networks, a Fortinet Company, provides complete visibility into all network endpoints, enhance access control, & take security to the network edge.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Colossus Technologies Group	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	18 contacts →
	Exact match “At Colossus Technologies Group, we provide top-tier cybersecurity and digital trust staffing, IT consulting, and project management solutions, including privacy, security, and GRC…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Acelium	Exact match	Boston, United StatesHQ recorded Oct 1, 2026	51-200	14 contacts →
	Exact match “Is a cybersecurity engineering company that delivers live operational and executive oversight of IT infrastructure and cybersecurity posture to enterprise customers globally.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Proinf	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	51-200	14 contacts →
	Exact match “Proinf is a complete suite of Cybersecurity and Professional Services Provider.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	EOS Systems	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	11-50	13 contacts →
	Exact match “Eos Systems, a leader in cyber security and technology delivery services, has been helping clients solve complex technology challenges for over 25 years.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	247 Group, LC	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	12 contacts →
	Exact match “Security advice to Federal Government, small and large businesses - Business development & consulting - DoD related Internet of Things (IoT) consulting - Military program…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Vault America	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	7 contacts →
	Exact match “Since 2004, Vault America has safeguarded customers’ data and their businesses with automated and scalable, industry compliant cyber and data security services, aligned under our…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	FYEO	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	11-50	6 contacts →
	Exact match “FYEO is a leading cybersecurity company that utilizes the power of AI and decentralized technologies to secure individuals and enterprises from cyber threats.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Seralys	Exact match	Boston, United StatesHQ recorded Oct 1, 2026	1-10	5 contacts →
	Exact match “Seralys is a boutique cybersecurity firm founded in 2012.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Hybridvalley	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	51-200	4 contacts →
	Exact match “HybridValley is your technology consulting partner in all areas of information technology.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Infersight LLC	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	11-50	4 contacts →
	Exact match “InferSight is one of the top trusted cyber security solutions partners in the industry.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Salt Cybersecurity	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	11-50	4 contacts →
	Exact match “The SaltCISO Solution AN ESSENTIAL ALL-IN-ONE CYBERSECURITY SOLUTION Salt Cybersecurity sifted through the multitude of security products and services, determined what was most…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Spherium Consulting Group	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	4 contacts →
	Exact match “Empowering organizations to secure their cloud, data, and identities with tailored protection and strategic expertise, we specialize in modern cybersecurity for Microsoft 365 and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Kaliber Data Security	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	4 contacts →
	Exact match “Kaliber helps companies Improve their cyber posture, reduce risk and improve AI security awareness.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Cloudrabia	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	3 contacts →
	Exact match “We enable companies to grow by providing technical services in cybersecurity, cloud computing, and software development.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	Cisomate	Exact match	Boston, United StatesHQ recorded Oct 1, 2026	1-10	3 contacts →
	Exact match “The expertise of a CISO fully integrated into an end-to-end automated processes technology solution.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Arsenal Cyber Force	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	2 contacts →
	Exact match “At Arsenal we are dedicated to delivering premier cybersecurity solutions, safeguarding our clients' digital landscapes.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Aella Consulting Group, INC	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1-10	2 contacts →
	Exact match “Aella Consulting Group provides total end-to-end security consulting services for End-users, Systems Integrators, Vendors and Investors.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cybersecurity services firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 61 cybersecurity services firms based in Boston, United States

See the full list, filter by size, metro and specialty, and access 2,016 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity services firms based in Boston, United States at a glance

As of Oct 1, 2026

43.7%Verified-email coverage

75.6Average contacts per company

1-10Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 61 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Boston, United States whose business descriptions match “cybersecurity services firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 2,016 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity services firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity services firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity services firms are there based in Boston, United States?

RevenueBase identified 61 company matches for cybersecurity services firms associated with Boston, United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Rapid7 tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most cybersecurity services firms?

New York leads the United States with 276 company records, followed by Washington (154) and Austin (153). Boston has 61.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,016 professional contacts with verified work emails tracked across these 61 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.