Company lists · Data verified August 2026

Top 25 AI cybersecurity companies based in Boston, United States

Name: AI cybersecurity companies based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 38 companies tracked

There are 38 AI cybersecurity companies headquartered in Boston, United States (RevenueBase, August 2026). RevenueBase tracks 6,457 professional contacts across them, including 4,584 with verified work emails and 2,346 with mobile numbers. New York is the largest hub.

This list covers AI cybersecurity companies headquartered in Boston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

38Companies

6,457Contacts tracked

4,584Verified emails

2,346Mobile numbers

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The 25 largest AI cybersecurity companies based in Boston, United States

Ranked by team size

Top 25 of 38 AI cybersecurity companies based in Boston, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Proofpoint	Boston, MA	1,001-5,000	4,662	3,655
2	Cynet Security	Boston, MA	201-500	304	225
3	DEVO	Boston, MA	201-500	293	139
4	mend.io	Boston, MA	201-500	258	169
5	Netwitness	Boston, MA	1,001-5,000	192	98
6	Nuharbor Security	Boston, MA	51-200	149	91
7	SOC Prime	Boston, MA	51-200	99	47
8	Hackersec	Boston, MA	51-200	89	3
9	7ai	Boston, MA	51-200	59	12
10	Cybersixgill, A Bitsight Company	Boston, MA	51-200	50	27
11	Perception Point	Boston, MA	51-200	36	12
12	Realm.Security, INC	Boston, MA	11-50	33	17
13	Trojai	Boston, MA	11-50	27	18
14	Cynamics	Boston, MA	11-50	26	9
15	Cybersaint	Boston, MA	11-50	23	14
16	Enkrypt AI	Boston, MA	11-50	22	12
17	Freeze	Boston, MA	11-50	22	2
18	Bradford Networks	Boston, MA	51-200	22	1
19	Intsights, A Rapid7 Company	Boston, MA	201-500	18	6
20	Acelium	Boston	51-200	14	9
21	FYEO	Boston, MA	11-50	6	3
22	Unravl Technologies	Boston, MA	1-10	5	1
23	Infersight LLC	Boston, MA	11-50	4	2
24	Salt Cybersecurity	Boston, MA	11-50	4	2
25	Arsenal Cyber Force	Boston, MA	1-10	2	2

Showing 25 of 38 AI cybersecurity companies based in Boston, United States

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AI cybersecurity companies based in Boston, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 101 HQs

2,346Contacts with mobile numbers

44Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

AI cybersecurity companies by metro in the United States

Metro	Companies
AI cybersecurity companies in New York	101
AI cybersecurity companies in San Francisco	79
AI cybersecurity companies in Austin	54
AI cybersecurity companies in Miami	44
AI cybersecurity companies in Boston	38
AI cybersecurity companies in Dallas	36
AI cybersecurity companies in Washington	33

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “AI cybersecurity companies”, with match quality audited by blind human judging, and headquartered in Boston, United States.
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: Contact records re-verify on a rolling cadence; 44 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many AI cybersecurity companies are there based in Boston, United States?

There are 38 AI cybersecurity companies headquartered in Boston, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Proofpoint, headquartered in Boston, tops this list with the largest team on record.

Which city has the most AI cybersecurity companies?

New York leads with 101 headquartered companies, followed by San Francisco (79) and Austin (54).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,584 verified decision-maker contacts tracked across these 38 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.