Company lists · Data refreshed September 2026
Top 25 Information security firms based in Boston, United States
RevenueBase identified 61 information security firms headquartered in Boston, United States as of September 2026 and tracks 970 professional contacts across them, including 524 with verified work emails. Across the United States, New York is the largest hub for this category (210 companies); Boston has 61.
This list covers information security firms 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 25 largest information security firms based in Boston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 327 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 309 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 31 contacts → | ||||
Partial evidence “At Abusix, we empower businesses, ISPs, and email service providers with cutting-edge security solutions to safeguard digital infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 25 contacts → | ||||
Partial evidence “Adage Capital Management is a computer & network security company based out of 200 Clarendon St # 52, Boston, Massachusetts, United States.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 22 contacts → | ||||
Indirect evidence “Freeze is the premium cybersecurity and privacy solution trusted by leading organizations to mitigate risks such as social engineering, phishing, financial fraud, hacks, attacks…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 14 contacts → | ||||
Indirect evidence “Is a cybersecurity engineering company that delivers live operational and executive oversight of IT infrastructure and cybersecurity posture to enterprise customers globally.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 14 contacts → | ||||
Indirect evidence “Proinf is a complete suite of Cybersecurity and Professional Services Provider.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 13 contacts → | ||||
Partial evidence “Eos Systems, a leader in cyber security and technology delivery services, has been helping clients solve complex technology challenges for over 25 years.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 12 contacts → | ||||
Partial evidence “Security advice to Federal Government, small and large businesses - Business development & consulting - DoD related Internet of Things (IoT) consulting - Military program…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 6 contacts → | ||||
Indirect evidence “FYEO is a leading cybersecurity company that utilizes the power of AI and decentralized technologies to secure individuals and enterprises from cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Partial evidence “Physical security consulting firm providing assessments (risk and existing conditions), security road mapping, security system design, project management, commissioning, and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Indirect evidence “Seralys is a boutique cybersecurity firm founded in 2012.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Partial evidence “HybridValley is your technology consulting partner in all areas of information technology.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “Since its inception in Buckley Technology Group (BTG) has been a leading provider of financial industry solutions - offering superior consulting, implementation, and support…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Partial evidence “InferSight is one of the top trusted cyber security solutions partners in the industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Partial evidence “Kaliber helps companies Improve their cyber posture, reduce risk and improve AI security awareness.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Indirect evidence “SmartPoints™ Technology, Inc.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Indirect evidence “The expertise of a CISO fully integrated into an end-to-end automated processes technology solution.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Indirect evidence “At Arsenal we are dedicated to delivering premier cybersecurity solutions, safeguarding our clients' digital landscapes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “Aella Consulting Group provides total end-to-end security consulting services for End-users, Systems Integrators, Vendors and Investors.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “A global interdisciplinary analytics-driven and human-focused cybersecurity company which delivers innovative security solutions that ensure companies do what they do best -…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “Nucleus Cyber, an archTIS Limited company (ASX:AR9), is a provider of advanced information protection solutions that prevent data loss and protect against insider threats.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: information security firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names information security firms.
- Partial evidence
- Its own public description names part of information security firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name information security firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 61 information security firms based in Boston, United States
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Information security firms based in Boston, United States at a glance
As of Sep 28, 2026Companies by employee count
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
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 firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names information security firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among information security firms, 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 its RevenueBase Smart Search 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, 524 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 28, 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 firms by metro in the United States
- Information security firms in New York210
- Information security firms in Austin126
- Information security firms in Houston123
- Information security firms in Atlanta121
- Information security firms in Washington121
- Information security firms in Miami109
- Information security firms in Chicago106
- Information security firms in Dallas106
- Information security firms in San Francisco99
- Information security firms in Tampa86
- Information security firms in Los Angeles70
- Information security firms in San Diego68
- Information security firms in Denver61
- Information security firms in Arlington58
- Information security firms in Charlotte58
- Information security firms in Columbia57
- Information security firms in Orlando52
- Information security firms in Seattle51
- Information security firms in Las Vegas48
- Information security firms in San Antonio48
- Information security firms in Phoenix45
- Information security firms in Reston44
- Information security firms in Alexandria42
- Information security firms in Baltimore39
- Information security firms in Sheridan38
- Information security firms in Wilmington37
- Information security firms in Mclean36
- Information security firms in Raleigh36
- Information security firms in Ashburn35
- Information security firms in Fairfax35
- Information security firms in Scottsdale35
- Information security firms in Minneapolis34
- Information security firms in San Jose34
- Information security firms in Huntsville33
- Information security firms in Pittsburgh33
- Information security firms in Philadelphia32
- Information security firms in Plano31
- Information security firms in Portland31
- Information security firms in Columbus29
- Information security firms in Dover28
- Information security firms in Colorado Springs27
- Information security firms in Fort Lauderdale27
- Information security firms in Richmond27
- Information security firms in Irvine26
- Information security firms in Herndon25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names information security firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many information security firms are there based in Boston, United States?
RevenueBase identified 61 information security firms 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 in the United States has the most information security firms?
New York leads the United States with 210 headquartered companies, followed by Austin (126) and Houston (123). Boston has 61.
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 524 verified decision-maker contacts tracked across these 61 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 61 information security firms based in Boston, United States. Start with a free account, no credit card.
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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 Smart Search, 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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