Company lists · Data refreshed September 2026

Top 25 Cybersecurity contractors based in Alexandria, United States

Name: Cybersecurity contractors based in Alexandria, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 87 companies tracked

RevenueBase identified 87 cybersecurity contractors headquartered in Alexandria, United States as of September 2026 and tracks 4,688 professional contacts across them, including 797 with verified work emails. New York is the largest hub.

This list covers cybersecurity contractors headquartered in Alexandria, 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 21, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

87Companies

4,688Contacts tracked

797Verified emails

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The 25 largest cybersecurity contractors based in Alexandria, United States

Ranked by team size

Top 25 of 87 cybersecurity contractors based in Alexandria, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Systems Planning & Analysis	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,092 contacts →
	Indirect evidence “Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.” Source: RevenueBase Database · checked Sep 21, 2026
2	VT Group VTG	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,168 contacts →
	Indirect evidence “VTG delivers force modernization and digital transformation solutions that expand America’s competitive advantage in the modern battlespace.” Source: RevenueBase Database · checked Sep 21, 2026
3	Invictus International Consulting, LLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	201-500	206 contacts →
	Indirect evidence “Invictus is a leading provider of technology services for national security systems.” Source: RevenueBase Database · checked Sep 21, 2026
4	Darkstar Intelligence	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	125 contacts →
	Indirect evidence “DarkStar Intelligence is a Service-Disabled Veteran-Owned Small Business (SDVOSB) delivering advanced intelligence solutions to government and private sectors.” Source: RevenueBase Database · checked Sep 21, 2026
5	Professional Solutions, LLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	124 contacts →
	Indirect evidence “Founded in 2002, ProSol is an SDVOSB that delivers rapid, reliable solutions that contribute to the success of the U.S.” Source: RevenueBase Database · checked Sep 21, 2026
6	Edgesource Corporation	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	114 contacts →
	Indirect evidence “NATIONAL SECURITY EXPERTISE THAT POWERS MISSION SUCCESS Edgesource doesn't observe the mission from afar-we advance it from within.* 24/7/365 Vigilance * Automated Insights *…” Source: RevenueBase Database · checked Sep 21, 2026
7	SBG Technology Solutions, INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	82 contacts →
	Indirect evidence “SBG Technology Solutions, Inc.(SBG) a wholly-owned subsidiary of DSS, Inc, offers IT Governance, Program Management, Systems Engineering, Enterprise Modernization, Artificial…” Source: RevenueBase Database · checked Sep 21, 2026
8	Fedsync	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	69 contacts →
	Indirect evidence “Federal Integrated Systems Corporation (FedSync) is a ISO 9001 Quality Management Systems Certified and SBA 8(a) certified vendor supporting multiple federal agencies.” Source: RevenueBase Database · checked Sep 21, 2026
9	Onezero Solutions	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	201-500	68 contacts →
	Indirect evidence “OneZero Solutions is an 8(a), Service-Disabled Veteran-Owned Small Business (SDVOSB) that is problem-solving and solutions-oriented.” Source: RevenueBase Database · checked Sep 21, 2026
10	Advantage Sci, LLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	201-500	56 contacts →
	Indirect evidence “Advantage SCI is a professional security and counterintelligence firm, headquartered in Alexandria, Virginia.” Source: RevenueBase Database · checked Sep 21, 2026
11	Arrowpoint Corporation	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect evidence “Arrowpoint, a MorphWorks company, has delivered premiere information technology and consulting services.” Source: RevenueBase Database · checked Sep 21, 2026
12	Commonwealth Technology Innovation, An HII Company	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect evidence “CTI, an HII company, provides specialized hardware, software, and mission support to our nation’s Defense, Intelligence, and Security communities.” Source: RevenueBase Database · checked Sep 21, 2026
13	Securicon, LLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “Securicon provides expert consulting for application, system and network security.” Source: RevenueBase Database · checked Sep 21, 2026
14	Focus Data Solutions	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “Focus Data Solutions is Your Partner for Tomorrow’s IT.” Source: RevenueBase Database · checked Sep 21, 2026
15	Whitehawk INC	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “At WhiteHawk, we streamline cybersecurity decision-making through a three-step approach: 1.” Source: RevenueBase Database · checked Sep 21, 2026
16	Polarisgov	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “PolarisGov is a mission-focused small business built for secure delivery and operational precision.” Source: RevenueBase Database · checked Sep 21, 2026
17	Antean Technology	Indirect evidence	Alexandria, United StatesHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “3x Inc.” Source: RevenueBase Database · checked Sep 21, 2026
18	Integrated Resource Technologies	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	12 contacts →
	Indirect evidence “Integrated Resource Technologies, Inc.(IRT) provides Intelligence Support Solutions; Operational Support; Security Services; and IT Solutions primarily to DoD and Intelligence…” Source: RevenueBase Database · checked Sep 21, 2026
19	Hybrid Data Security	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	10 contacts →
	Indirect evidence “Typical firms provide highly trained and cleared professionals in a variety of specialties that include secure application development, business analytics, cyber security, program…” Source: RevenueBase Database · checked Sep 21, 2026
20	Gray Tier Technologies, LLC	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “Gray Tier Technolgies is a privately held company providing full cyclic cybersecurity services and products.” Source: RevenueBase Database · checked Sep 21, 2026
21	Secureninja Cybersecurity Training & Services	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “SecureNinja provides highly specialized cybersecurity training and consulting services, as well as video production services targeted to the cybersecurity community.” Source: RevenueBase Database · checked Sep 21, 2026
22	Pendulum	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “Pendulum is transforming cyber defense and information security.” Source: RevenueBase Database · checked Sep 21, 2026
23	Patchadvisor, INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “PatchAdvisor is a complete IT security firm focused on providing world class IT security services to our clients.” Source: RevenueBase Database · checked Sep 21, 2026
24	3p Solutions INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
25	Tech Leader Solutions, LLC	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “HUBZone Certified, Tech Leader Solutions, LLC provides Cybersecurity and IT Consulting services to CIOs and CTOs, supporting a wide range of IT programs through strategy…” Source: RevenueBase Database · checked Sep 21, 2026

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 contractors. 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 contractors.
Partial evidence: Its own public description names part of cybersecurity contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity contractors. 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 87 cybersecurity contractors based in Alexandria, United States

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Cybersecurity contractors based in Alexandria, United States at a glance

As of Sep 21, 2026

17.0%Verified-email coverage

53.9Average contacts per company

11-50Median size (employees)

336.8%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Alexandria, so it is reported there. Company counts and contact totals on this page are exact for Alexandria, over 87 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 contractors, 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 Alexandria, United States whose own description of what they do matches “cybersecurity contractors”. 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 contractors), 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 contractors, and records with no verified work email. Companies headquartered outside Alexandria 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, 797 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 21, 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 contractors by metro in the United States

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 contractors, 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 contractors are there based in Alexandria, United States?

RevenueBase identified 87 cybersecurity contractors headquartered in Alexandria, 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?

Systems Planning & Analysis, headquartered in Alexandria, tops this list with the largest team on record.

Which city has the most cybersecurity contractors?

New York leads with 293 headquartered companies, followed by Washington (220) and Austin (170).

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 797 verified decision-maker contacts tracked across these 87 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 21, 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.