Company lists · Data refreshed September 2026
Top 25 Arlington network security companies worldwide
RevenueBase identified 180 arlington network security companies worldwide as of September 2026 and tracks 1,088 professional contacts across them, including 224 with verified work emails. The United States is the largest market and Alexandria the largest hub.
This list covers arlington network security companies worldwide, 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 27, 2026. Country and city lists for arlington network security companies follow the table.
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 arlington network security companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 119 contacts → | ||||
Partial evidence “SealingTech, a Parsons Company, rapidly delivers innovative, agile cybersecurity solutions that modernize, protect, and defend the networks and systems of the federal government…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 52 contacts → | ||||
Strong evidence “Access Technologies is a physical and network security company providing retrofitting and managed services to businesses in New Mexico and Arizona.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 47 contacts → | ||||
Partial evidence “DFW Security specializes in Alarm Monitoring, Security Systems, Video, Access Control and Fire Systems with superior technology, value and excellence in customer service.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 46 contacts → | ||||
Strong evidence “Access 2 Networks is Canada’s premier network security provider, dedicated to helping organizations manage and protect their networks against internal and external security…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 28 contacts → | ||||
Indirect evidence “Dataway, Inc.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 27 contacts → | ||||
Partial evidence “Roka Security, LLC is a computer security firm located in the Washington D.C.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 24 contacts → | ||||
Indirect evidence “Since our inception, our focus has always been to be the first and final line of defense between you, your team, and your users in the never ending perils of technology.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 contacts → | ||||
Partial evidence “Advanced Network Systems provides industry-leading cybersecurity and IT network solutions for organizations in Virginia, West Virginia, and the Mid-Atlantic region.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 17 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 contacts → | ||||
Partial evidence “Next Generation Security Concepts, Inc.(NGSC, Inc.) is an electronic security integration company located near Purcellville, VA servicing the greater Washington, DC metro area and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 14 contacts → | ||||
Partial evidence “Armed Enforcement is a physical security company that provides on-site physical security and roving security patrols using unarmed guards and armed officers.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Partial evidence “Holocom is the leading solutions provider of Protective Distribution Systems (PDS) for classified networks such as SIPRNet, JWICS, and other networks transmitting highly sensitive…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 12 contacts → | ||||
Indirect evidence “We are a company dedicated to providing our clients with the highest quality services and solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Partial evidence “The premier commercial security integrator in the DC, VA, MD metro area.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 11 contacts → | ||||
Partial evidence “Petitbon Alarm is the Maryland leader in residential, commercial, and government security.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 11 contacts → | ||||
Strong evidence “Axxum Technologies is a premier provider of Network Communications and Information Technology Security Solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 10 contacts → | ||||
Partial evidence “Top 50 Fastest Growing Company 2021, 2022, 2023, and 2024 - SacBizJournal Winner of Best of Sacramento 2021 - Best Cybersecurity Firm Arctic Wolf Networks - SLED West Partner of…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 10 contacts → | ||||
Strong evidence “Networx Australia are Internet Security Experts, providing a wealth of experience and expertise in designing, configuring and implementing the major brands of Internet Security…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 9 contacts → | ||||
Indirect evidence “Gray Tier Technolgies is a privately held company providing full cyclic cybersecurity services and products.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 9 contacts → | ||||
Indirect evidence “Secure e solutions make sure that there is a high-end defense strategy for your technology and process so that you get the utmost protection that you deserve.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Strong evidence “Network Security and Managem Services” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Strong evidence “Digital Scepter, founded in 2007, specializes in advanced network security solutions for organizations of all sizes.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Partial evidence “We are security engineers with over 20 years of experience working in the DFW Metroplex.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Indirect evidence “Code Red Audits LLC was founded in 2007 with the goal of providing companies what they needed to keep data safe.” Source: RevenueBase Database · checked Sep 27, 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: arlington network security 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 arlington network security companies.
- Partial evidence
- Its own public description names part of arlington network security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name arlington network security 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 25 of 180 arlington network security companies worldwide
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Arlington network security companies worldwide at a glance
As of Sep 27, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 arlington network security 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.
- Coverage
- Every country. Country and city lists for arlington network security companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “arlington network security 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 arlington network security 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 arlington network security companies, and records with no verified work email.
- 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, 224 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 27, 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.
Arlington network security companies by location
1 lists · largest firstEvery Arlington network security companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 arlington network security 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 arlington network security companies are there worldwide?
RevenueBase identified 180 arlington network security companies worldwide 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?
Sealing Technologies, A Parsons Company, headquartered in Columbia, tops this list with the largest team on record.
Which country has the most arlington network security companies?
The United States leads with 94 companies. Every arlington network security companies list by country and city is linked on this page.
Which city has the most arlington network security companies?
Alexandria leads with 4 headquartered companies, followed by Fairfax (4) and Arlington (2).
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 224 verified decision-maker contacts tracked across these 180 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 27, 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.