Company lists · Data refreshed September 2026
Top 11 Cybersecurity government staffing companies based in Boston, United States
RevenueBase identified 29 cybersecurity government staffing companies headquartered in Boston, United States as of September 2026 and tracks 141 professional contacts across them, including 48 with verified work emails. Across the United States, Washington is the largest hub for this category (117 companies); Boston has 29.
This list covers cybersecurity government staffing 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, 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 11 largest cybersecurity government staffing companies based in Boston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 18 contacts → | ||||
Strong evidence “At Colossus Technologies Group, we provide top-tier cybersecurity and digital trust staffing, IT consulting, and project management solutions, including privacy, security, and GRC…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 16 contacts → | ||||
Partial evidence “CyberSN is your partner in Cybersecurity and IT Workforce Intelligence, Workforce Risk Management and Talent Acquisition Strategy, offering talent intelligence solutions that…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 14 contacts → | ||||
Partial 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. | |||||
| 4 | 14 contacts → | ||||
Partial 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. | |||||
| 5 | 13 contacts → | ||||
Indirect 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. | |||||
| 6 | 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. | |||||
| 7 | 8 contacts → | ||||
Partial evidence “A Full Cycle Staffing Firm, focused on securing top-tier talent for both short and long term contracts within Federal Agencies.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 4 contacts → | ||||
Indirect 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. | |||||
| 9 | 4 contacts → | ||||
Partial 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. | |||||
| 10 | 2 contacts → | ||||
Partial 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. | |||||
| 11 | 1 contacts → | ||||
Partial evidence “Santsec's approach to cybersecurity leverages a blend of real-world experience and cutting-edge technology.” 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: cybersecurity government staffing companies. 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 cybersecurity government staffing companies.
- Partial evidence
- Its own public description names part of cybersecurity government staffing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cybersecurity government staffing companies. 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 11 of 29 cybersecurity government staffing companies based in Boston, United States
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Cybersecurity government staffing companies 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 29 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 cybersecurity government staffing companies, 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 “cybersecurity government staffing companies”. 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 cybersecurity government staffing companies), 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 cybersecurity government staffing 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 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, 48 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.
Cybersecurity government staffing companies by metro in the United States
- Cybersecurity government staffing companies in Washington117
- Cybersecurity government staffing companies in New York107
- Cybersecurity government staffing companies in Atlanta82
- Cybersecurity government staffing companies in Austin79
- Cybersecurity government staffing companies in Houston71
- Cybersecurity government staffing companies in Dallas67
- Cybersecurity government staffing companies in Arlington62
- Cybersecurity government staffing companies in Chicago62
- Cybersecurity government staffing companies in Columbia60
- Cybersecurity government staffing companies in Tampa60
- Cybersecurity government staffing companies in Reston57
- Cybersecurity government staffing companies in Miami55
- Cybersecurity government staffing companies in Mclean49
- Cybersecurity government staffing companies in Herndon47
- Cybersecurity government staffing companies in San Diego46
- Cybersecurity government staffing companies in San Antonio44
- Cybersecurity government staffing companies in Los Angeles42
- Cybersecurity government staffing companies in Alexandria40
- Cybersecurity government staffing companies in Huntsville38
- Cybersecurity government staffing companies in Baltimore37
- Cybersecurity government staffing companies in San Francisco37
- Cybersecurity government staffing companies in Fairfax36
- Cybersecurity government staffing companies in Denver34
- Cybersecurity government staffing companies in Ashburn33
- Cybersecurity government staffing companies in Vienna33
- Cybersecurity government staffing companies in Charlotte32
- Cybersecurity government staffing companies in Las Vegas32
- Cybersecurity government staffing companies in Orlando32
- Cybersecurity government staffing companies in Chantilly30
- Cybersecurity government staffing companies in Phoenix28
- Cybersecurity government staffing companies in Rockville25
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 cybersecurity government staffing companies, 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 cybersecurity government staffing companies are there based in Boston, United States?
RevenueBase identified 29 cybersecurity government staffing 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?
Colossus Technologies Group, headquartered in Boston, tops this list with the largest team on record.
Which city in the United States has the most cybersecurity government staffing companies?
Washington leads the United States with 117 headquartered companies, followed by New York (107) and Atlanta (82). Boston has 29.
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 48 verified decision-maker contacts tracked across these 29 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.
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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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