Company lists · Data refreshed September 2026

Top 25 Cybersecurity engineers for hire based in the United States

Name: Cybersecurity engineers for hire based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 446 companies tracked

RevenueBase identified 446 cybersecurity engineers for hire headquartered in the United States as of September 2026 and tracks 7,665 professional contacts across them, including 1,600 with verified work emails. New York is the largest hub.

This list covers cybersecurity engineers for hire headquartered in the 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

446Companies

7,665Contacts tracked

1,600Verified emails

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The 25 largest cybersecurity engineers for hire based in the United States

Ranked by team size

Top 25 of 446 cybersecurity engineers for hire based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity engineers for hire: 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	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	n/a	3,649 contacts →
	Indirect evidence “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Source: RevenueBase Database · checked Sep 28, 2026
2	Stratascale	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 28, 2026	201-500	171 contacts →
	Partial evidence “Stratascale is a premier services company proudly operating as the cybersecurity division of SHI.” Source: RevenueBase Database · checked Sep 28, 2026
3	Evolve Security Academy	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	n/a	166 contacts →
	Partial evidence “Evolve Security is a technical cybersecurity firm and the home of Evolve Academy, offering holistic and advanced cybersecurity training and continuously ranked #1 in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
4	Synersys Technologies INC	Indirect evidence	Cedar Park, TX, United StatesHQ checked Sep 28, 2026	201-500	143 contacts →
	Indirect evidence “At Synersys Technologies, we help small and mid-sized enterprises build secure, scalable, and high-performance technology environments.” Source: RevenueBase Database · checked Sep 28, 2026
5	Sealing Technologies, A Parsons Company	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	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 28, 2026
6	Adapt Forward	Partial evidence	North Charleston, SC, United StatesHQ checked Sep 28, 2026	51-200	113 contacts →
	Partial evidence “Adapt Forward helps government agencies outpace adversaries through proven Cybersecurity Service Provider (CSSP) operations, mission-focused innovation, and a people first culture…” Source: RevenueBase Database · checked Sep 28, 2026
7	Ioactive, INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	51-200	107 contacts →
	Indirect evidence “IOActive is a trusted partner for Global enterprises, providing research-fueled security services across all industries.” Source: RevenueBase Database · checked Sep 28, 2026
8	Trustedsec	Indirect evidence	Fairlawn, OH, United StatesHQ checked Sep 28, 2026	51-200	102 contacts →
	Indirect evidence “TrustedSec is an end-to-end security consulting company that provides customized services to build client-defined success.” Source: RevenueBase Database · checked Sep 28, 2026
9	Hunter Strategy	Strong evidence	Pompano Beach, DC, United StatesHQ checked Sep 28, 2026	51-200	100 contacts →
	Strong evidence “Cybersecurity and software engineering SMEs that help Government and Commercial customers build secure scalable solutions.” Source: RevenueBase Database · checked Sep 28, 2026
10	Scybers	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	51-200	89 contacts →
	Partial evidence “Scybers is a pure-play global cybersecurity firm.” Source: RevenueBase Database · checked Sep 28, 2026
11	Techguard Security	Partial evidence	O'fallon, IL, United StatesHQ checked Sep 28, 2026	51-200	80 contacts →
	Partial evidence “Our Cybersecurity Specialists are highly educated and certified professionals who have utilized their extensive IT security experience to support both Fortune 500 businesses and…” Source: RevenueBase Database · checked Sep 28, 2026
12	Cyber Defense Technologies	Indirect evidence	Dulles, VA, United StatesHQ checked Sep 28, 2026	11-50	61 contacts →
	Indirect evidence “We specialize in providing comprehensive cyber security solutions by leveraging our information security background in the GovCon and military experiences to serve the federal…” Source: RevenueBase Database · checked Sep 28, 2026
13	Def-Logix, INC	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 28, 2026	51-200	58 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
14	Applied Network Solutions, INC	Strong evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	57 contacts →
	Strong evidence “We operate at the intersection of network engineering and cybersecurity, providing secure, scalable, and high-performing architectures for our customers.” Source: RevenueBase Database · checked Sep 28, 2026
15	Breakpoint Labs	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	53 contacts →
	Partial evidence “BreakPoint Labs, a Valiant Solutions Company, delivers offensive and defensive cybersecurity to the Department of War, federal agencies, and commercial organizations.” Source: RevenueBase Database · checked Sep 28, 2026
16	Constellation Technologies, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	53 contacts →
	Partial evidence “Constellation Technologies, Inc.(CTI) provides cyber engineers, integrators, administrators and experts that have the right blending of experiences and multi-spectral knowledge…” Source: RevenueBase Database · checked Sep 28, 2026
17	Secure Traces	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	51-200	52 contacts →
	Indirect evidence “Secure Traces is a unique cyber security services provider with an impeccable track record of delivering outstanding services, we are driven by passion and backed by our extensive…” Source: RevenueBase Database · checked Sep 28, 2026
18	Cromulence	Partial evidence	Melbourne, FL, United StatesHQ checked Sep 28, 2026	51-200	51 contacts →
	Partial evidence “At Cromulence LLC we advance our nation’s cybersecurity capabilities through expert application of cutting edge research and equip the next generation of security experts with…” Source: RevenueBase Database · checked Sep 28, 2026
19	Ebryx LLC	Strong evidence	Salem, NH, United StatesHQ checked Sep 28, 2026	201-500	48 contacts →
	Strong evidence “Ebryx LLC is a 360° cybersecurity and secure engineering company trusted by enterprises, startups, and governments to safeguard critical digital ecosystems.” Source: RevenueBase Database · checked Sep 28, 2026
20	H2l Solutions INC	Partial evidence	Huntsville, AL, United StatesHQ checked Sep 28, 2026	11-50	46 contacts →
	Partial evidence “H2L Solutions is a Service-Disabled Veteran-Owned Small Business (SDVOSB) and HUBZone-certified cybersecurity company headquartered in Huntsville, Alabama.” Source: RevenueBase Database · checked Sep 28, 2026
21	Athena Technology Group	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	45 contacts →
	Indirect evidence “Cyber Security (Vulnerability Assessments, 24/7 Operations, Hunt Teams, Risk Management, Cyber Response) Program Management (Acquisition, Financial, Technology Insertion) System…” Source: RevenueBase Database · checked Sep 28, 2026
22	NR Labs	Partial evidence	Tysons, VA, United StatesHQ checked Sep 28, 2026	51-200	45 contacts →
	Partial evidence “NR Labs was founded with a singular focus on cybersecurity, driven by passionate employees dedicated to solving our customers’ most complex cyber challenges.” Source: RevenueBase Database · checked Sep 28, 2026
23	Clearfocus Technologies	Partial evidence	Leesburg, VA, United StatesHQ checked Sep 28, 2026	51-200	43 contacts →
	Partial evidence “ClearFocus® Technologies provides advanced cybersecurity services that secure our nation’s most sensitive assets.” Source: RevenueBase Database · checked Sep 28, 2026
24	Kyrus Tech	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 28, 2026	11-50	40 contacts →
	Indirect evidence “Kyrus is a security innovation company solving the world's hardest computer security problems.” Source: RevenueBase Database · checked Sep 28, 2026
25	Netsage	Indirect evidence	Annapolis, MD, United StatesHQ checked Sep 28, 2026	51-200	39 contacts →
	Indirect evidence “NetSage Corporation (NetSage) is a mission-focused provider of cyber services to the US Federal Government.” Source: RevenueBase Database · checked Sep 28, 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 engineers for hire. 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 engineers for hire.
Partial evidence: Its own public description names part of cybersecurity engineers for hire, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity engineers for hire. 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 446 cybersecurity engineers for hire based in the United States

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Cybersecurity engineers for hire based in the United States at a glance

As of Sep 28, 2026

20.9%Verified-email coverage

17.2Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

261

11-50

140

51-200

201-500

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 446 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 engineers for hire, 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 the United States whose own description of what they do matches “cybersecurity engineers for hire”. 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 engineers for hire), 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 engineers for hire, and records with no verified work email. Companies headquartered outside United States 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, 1,600 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.

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 engineers for hire, 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 engineers for hire are there based in the United States?

RevenueBase identified 446 cybersecurity engineers for hire headquartered in the 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?

Bugcrowd, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most cybersecurity engineers for hire?

New York leads with 15 headquartered companies, followed by Atlanta (12) and Dallas (12).

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 1,600 verified decision-maker contacts tracked across these 446 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.