Company lists · Data refreshed October 2026

Top 25 Cybersecurity companies based in Alexandria, United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 50 companies tracked

Our directory lists 50 cybersecurity companies based in Alexandria, United States, with 409 professional contacts and 119 email addresses. The list was last updated in October 2026. Across the United States, New York is the largest hub for this category (358 companies); Alexandria has 50.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of October 1, 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 Oct 1, 2026 86% judged on-target in blind review

50Companies

409Contacts tracked

119Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cybersecurity companies based in Alexandria, United States

Ranked by team size

Top 25 of 50 cybersecurity companies based in Alexandria, United States, ranked by team size, largest first. Data refreshed Oct 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity companies: 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	Onezero Solutions	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
2	Advantage Sci, LLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	201-500	56 contacts →
	Indirect evidence “Advantage SCI is a professional security and counterintelligence firm, headquartered in Alexandria, Virginia.” Source: RevenueBase Database · checked Oct 1, 2026
3	Arrowpoint Corporation	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	51-200	47 contacts →
	Indirect evidence “Arrowpoint, a MorphWorks company, has delivered premiere information technology and consulting services.” Source: RevenueBase Database · checked Oct 1, 2026
4	Focus Data Solutions	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	26 contacts →
	Indirect evidence “Focus Data Solutions is Your Partner for Tomorrow’s IT.” Source: RevenueBase Database · checked Oct 1, 2026
5	Whitehawk INC	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	26 contacts →
	Strong evidence “At WhiteHawk, we streamline cybersecurity decision-making through a three-step approach: 1.” Source: RevenueBase Database · checked Oct 1, 2026
6	Safedns	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	23 contacts →
	Indirect evidence “At SafeDNS, we are committed to creating a safer and more secure online environment for SMBs, enterprises, ISPs, MSPs, OEMs, and Education.” Source: RevenueBase Database · checked Oct 1, 2026
7	Aligned Technology Solutions	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	10 contacts →
	Indirect evidence “Since 2010 Aligned Technology Solutions has been helping organizations leverage and manage technology to grow and secure their businesses.” Source: RevenueBase Database · checked Oct 1, 2026
8	Gray Tier Technologies, LLC	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	9 contacts →
	Strong evidence “Gray Tier Technolgies is a privately held company providing full cyclic cybersecurity services and products.” Source: RevenueBase Database · checked Oct 1, 2026
9	Secureninja Cybersecurity Training & Services	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	9 contacts →
	Strong 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 Oct 1, 2026
10	Pendulum	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	9 contacts →
	Indirect evidence “Pendulum is transforming cyber defense and information security.” Source: RevenueBase Database · checked Oct 1, 2026
11	Patchadvisor, INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
12	Tech Leader Solutions, LLC	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	7 contacts →
	Strong 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 Oct 1, 2026
13	Aptnexus	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	5 contacts →
	Strong evidence “Founded in 2012, APTNEXUS is a premier provider of IT Services with a specialization in cybersecurity governance, risk, and compliance solutions for both information and…” Source: RevenueBase Database · checked Oct 1, 2026
14	Rosetech Marketing	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	4 contacts →
	Strong evidence “A specialized marketing agency with deep domain knowledge of cybersecurity, data analytics, integrated risk management, software engineering, and strategy and transformation for…” Source: RevenueBase Database · checked Oct 1, 2026
15	Risk Aperture	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	4 contacts →
	Indirect evidence “Stop guessing.” Source: RevenueBase Database · checked Oct 1, 2026
16	Cerium Technology, INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	3 contacts →
	Indirect evidence “Cerium Technology Services was established in 2009 to provide professional and affordable IT services.” Source: RevenueBase Database · checked Oct 1, 2026
17	Nexthreat	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	3 contacts →
	Indirect evidence “NexThreat, an 8a, SDVOSB, and HUBZone company is headquartered in Alexandria, VA, and is an innovative provider of Threat Detection and Advanced Analytics to IC, DOD, and FedCiv…” Source: RevenueBase Database · checked Oct 1, 2026
18	Ariana Insurance	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	3 contacts →
	Indirect evidence “Ariana Insurance is an insurance company based in Alexandria, VA.” Source: RevenueBase Database · checked Oct 1, 2026
19	Fusion Technology Strategies, INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	2 contacts →
	Indirect evidence “Fusion Technology Strategies (Fusion) is an SBA-certified Woman-Owned Small Business (WOSB) that specializes in delivering exceptional Cyber Security, CIO and CISO Advisory…” Source: RevenueBase Database · checked Oct 1, 2026
20	Data Defense Solutions	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	2 contacts →
	Indirect evidence “Security Staff Augmentation DDS can help to augment your security staff as you build and grow your internal security team.” Source: RevenueBase Database · checked Oct 1, 2026
21	Lc&j Security Solutions LLC	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	2 contacts →
	Strong evidence “LC & J Security Solutions is a proudly certified women-owned cybersecurity firm specializing in securing identities, critical data, and digital assets.” Source: RevenueBase Database · checked Oct 1, 2026
22	Intelligent Data INC	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	11-50	2 contacts →
	Strong evidence “We are a cybersecurity professional services company that implements security solutions for Federal, State, Local, Commercial, Education, and SMB entities.” Source: RevenueBase Database · checked Oct 1, 2026
23	Secure Consulting Solutions LLC	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	2 contacts →
	Strong evidence “Secure Solutions DC is a forward-thinking cybersecurity firm specializing in network and application penetration testing, securing networks in compliance with DFARS/NIST 800-53…” Source: RevenueBase Database · checked Oct 1, 2026
24	Petreski & Company, LLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	1 contacts →
	Indirect evidence “Petreski & Co.” Source: RevenueBase Database · checked Oct 1, 2026
25	Cyberrisq, LLC	Strong evidence	Alexandria, VA, United StatesHQ checked Oct 1, 2026	1-10	1 contacts →
	Strong evidence “CyberRisQ, LLC is a premier cloud and cybersecurity consulting firm, founded by industry leaders with decades of collective experience across diverse sectors including Finance…” Source: RevenueBase Database · checked Oct 1, 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 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 companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 50 cybersecurity companies based in Alexandria, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 119 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity companies based in Alexandria, United States at a glance

As of Oct 1, 2026

29.1%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 50 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 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 Alexandria, United States whose own description of what they do matches “cybersecurity 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 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 companies, 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, 119 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 October 1, 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 companies by metro in the United States

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 50 cybersecurity companies based in Alexandria, United States.

Which city in the United States has the most cybersecurity companies?

New York leads the United States with 358 headquartered companies, followed by San Francisco (190) and Austin (187). Alexandria has 50.

How many contacts are available for cybersecurity companies?

The directory includes 409 professional contacts and 119 email addresses for the listed cybersecurity companies.

Ready to reach these companies? Verified emails and direct dials for all 50 cybersecurity companies based in Alexandria, United States. Start with a free account, no credit card.

Download this list →

Related lists

Cybersecurity companies by geography

Browse the directory

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.