Company lists · Data refreshed September 2026
Top 19 Information security companies based in Boston, United States
RevenueBase identified 49 information security companies headquartered in Boston, United States as of September 2026 and tracks 2,031 professional contacts across them, including 906 with verified work emails. New York is the largest hub.
This list covers information security 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. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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.
The 19 largest information security companies based in Boston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 324 | ||||
“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.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 304 | ||||
“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.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 32 | ||||
“At Abusix, we empower businesses, ISPs, and email service providers with cutting-edge security solutions to safeguard digital infrastructure.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 26 | ||||
“Adage Capital Management is a computer & network security company based out of 200 Clarendon St # 52, Boston, Massachusetts, United States.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 14 | ||||
“Is a cybersecurity engineering company that delivers live operational and executive oversight of IT infrastructure and cybersecurity posture to enterprise customers globally.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | ProinfIndirect evidence | 14 | |||
“Proinf is a complete suite of Cybersecurity and Professional Services Provider.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | Vault AmericaPartial evidence | 7 | |||
“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…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 6 | ||||
“FYEO is a leading cybersecurity company that utilizes the power of AI and decentralized technologies to secure individuals and enterprises from cyber threats.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 5 | ||||
“HybridValley is your technology consulting partner in all areas of information technology.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | SeralysIndirect evidence | 5 | |||
“Seralys is a boutique cybersecurity firm founded in 2012.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5 | ||||
“We are the only cybersecurity consulting firm combining military cyber operations, federal critical infrastructure expertise, and private-sector security experience, with more…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4 | ||||
“Since its inception in Buckley Technology Group (BTG) has been a leading provider of financial industry solutions - offering superior consulting, implementation, and support…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 | ||||
“InferSight is one of the top trusted cyber security solutions partners in the industry.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 | ||||
“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…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | Spherium Consulting GroupIndirect evidence | 4 | |||
“Empowering organizations to secure their cloud, data, and identities with tailored protection and strategic expertise, we specialize in modern cybersecurity for Microsoft 365 and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 | ||||
“Kaliber helps companies Improve their cyber posture, reduce risk and improve AI security awareness.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | Smartpoints TechnologyIndirect evidence | 3 | |||
“SmartPoints™ Technology, Inc.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 | ||||
“At Arsenal we are dedicated to delivering premier cybersecurity solutions, safeguarding our clients' digital landscapes.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1 | ||||
“Santsec's approach to cybersecurity leverages a blend of real-world experience and cutting-edge technology.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 19 of 49 information security companies based in Boston, United States
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Information security companies based in Boston, United States at a glance
As of Sep 3, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 49 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among information security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- 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
- Companies headquartered in Boston, United States whose own description of what they do matches “information security companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among information security companies, and records with no verified work email. Companies headquartered outside Boston are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 906 across the full list. 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 September 3, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Information security companies by metro in the United States
- Information security companies in New York172
- Information security companies in Houston102
- Information security companies in Atlanta98
- Information security companies in Miami98
- Information security companies in Washington95
- Information security companies in Austin93
- Information security companies in Chicago90
- Information security companies in Dallas88
- Information security companies in San Francisco82
- Information security companies in Tampa74
- Information security companies in San Diego59
- Information security companies in Los Angeles57
- Information security companies in Arlington53
- Information security companies in Charlotte51
- Information security companies in Boston49
- Information security companies in Denver49
- Information security companies in Orlando48
- Information security companies in Columbia47
- Information security companies in San Antonio41
- Information security companies in Las Vegas40
- Information security companies in Phoenix37
- Information security companies in Seattle36
- Information security companies in Reston34
- Information security companies in Alexandria33
- Information security companies in Scottsdale32
- Information security companies in Baltimore29
- Information security companies in Fairfax29
- Information security companies in Raleigh29
- Information security companies in Sheridan29
- Information security companies in Huntsville28
- Information security companies in Mclean28
- Information security companies in Pittsburgh28
- Information security companies in San Jose28
- Information security companies in Wilmington28
- Information security companies in Ashburn25
- Information security companies in Columbus25
- Information security companies in Minneapolis25
Frequently asked
How many information security companies are there based in Boston, United States?
RevenueBase identified 49 information security companies headquartered in Boston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
IANS, headquartered in Boston, tops this list with the largest team on record.
Which city has the most information security companies?
New York leads with 172 headquartered companies, followed by Houston (102) and Atlanta (98).
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 906 verified decision-maker contacts tracked across these 49 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 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.
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