Company lists · Data refreshed September 2026

Top 25 Oil and gas cybersecurity companies based in the United States

Name: Oil and gas cybersecurity companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 564 companies tracked

RevenueBase identified 564 oil and gas cybersecurity companies headquartered in the United States as of September 2026 and tracks 9,718 professional contacts across them, including 4,223 with verified work emails and 3,472 with mobile numbers. Houston is the largest hub.

This list covers oil and gas cybersecurity companies 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 5, 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 5, 2026 86% judged on-target in blind review

564Companies

9,718Contacts tracked

4,223Verified emails

3,472Mobile numbers

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The 25 largest oil and gas cybersecurity companies based in the United States

Ranked by team size

Top 25 of 564 oil and gas cybersecurity companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas 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	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,232 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 5, 2026
2	PAS	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	1,231 contacts →
	Indirect evidence “PAS, part of Hexagon's Asset Lifecycle Intelligence division, delivers software solutions that prevent, detect, & remediate cyber threats, reduce process safety risks, and…” Source: RevenueBase Database · checked Sep 5, 2026
3	Trustwave, A Levelblue Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	874 contacts →
	Partial evidence “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: RevenueBase Database · checked Sep 5, 2026
4	Dragos, INC	Partial evidence	Hanover, MD, United StatesHQ checked Sep 5, 2026	501-1,000	551 contacts →
	Partial evidence “Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Source: RevenueBase Database · checked Sep 5, 2026
5	Nozomi Networks	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	201-500	375 contacts →
	Indirect evidence “We protect the world’s critical infrastructure from cyber threats.” Source: RevenueBase Database · checked Sep 5, 2026
6	Safeaeon INC	Partial evidence	Pleasanton, CA, United StatesHQ checked Sep 5, 2026	51-200	196 contacts →
	Partial evidence “SafeAeon leads the industry as a top-tier Cybersecurity-as-a-Service provider, delivering 24x7 premium Managed Security Services with AI-powered and human-driven 24x7 SOC…” Source: RevenueBase Database · checked Sep 5, 2026
7	Deepseas	Indirect evidence	Globally Distributed, United StatesHQ checked Sep 5, 2026	201-500	182 contacts →
	Indirect evidence “With 30 years of experience in cyber defense, DeepSeas is trusted by nearly clients around the world, including Fortune 100 enterprises and mid-market organizations, municipality…” Source: RevenueBase Database · checked Sep 5, 2026
8	Cyber Advisors	Indirect evidence	Maple Grove, MN, United StatesHQ checked Sep 5, 2026	201-500	176 contacts →
	Indirect evidence “Cyber Advisors is a nationwide leader in cyber security, providing a comprehensive range of Offensive, Defensive, and Risk Management services.” Source: RevenueBase Database · checked Sep 5, 2026
9	Nuharbor	Partial evidence	Colchester, VT, United StatesHQ checked Sep 5, 2026	51-200	151 contacts →
	Partial evidence “nuHarbor is a U.S-based cybersecurity firm trusted by public sector and critical infrastructure organizations nationwide.” Source: RevenueBase Database · checked Sep 5, 2026
10	OSC Edge	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	51-200	150 contacts →
	Indirect evidence “From CND in the Cloud to CSfC with Enterprise Remote Capabilities, OSC Edge empowers organizations with solutions that prepare them for today and tomorrow.” Source: RevenueBase Database · checked Sep 5, 2026
11	Helpsystems	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 5, 2026	1,001-5,000	131 contacts →
	Indirect evidence “HelpSystems has long been known for helping organizations become more secure and autonomous.” Source: RevenueBase Database · checked Sep 5, 2026
12	Shift5	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 5, 2026	51-200	129 contacts →
	Indirect evidence “Former military officers who stood up U.S.” Source: RevenueBase Database · checked Sep 5, 2026
13	Foxguard	Indirect evidence	Christiansburg, VA, United StatesHQ checked Sep 5, 2026	51-200	116 contacts →
	Indirect evidence “Foxguard delivers comprehensive OT Cyber Security and Compute Solutions tailored to meet the unique needs of critical infrastructures.” Source: RevenueBase Database · checked Sep 5, 2026
14	Tracesecurity	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 5, 2026	51-200	115 contacts →
	Partial evidence “TraceSecurity is a leading cybersecurity services company, providing a broad range of services and solutions in IT security compliance, risk and vulnerability management, and…” Source: RevenueBase Database · checked Sep 5, 2026
15	Directdefense	Indirect evidence	Denver, CO, United StatesHQ checked Sep 5, 2026	51-200	111 contacts →
	Indirect evidence “DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.” Source: RevenueBase Database · checked Sep 5, 2026
16	Foresite Cybersecurity	Indirect evidence	Overland Park, KS, United StatesHQ checked Sep 5, 2026	51-200	101 contacts →
	Indirect evidence “As the world becomes more connected, our lives and businesses are more vulnerable.” Source: RevenueBase Database · checked Sep 5, 2026
17	Accessit Group	Partial evidence	King Of Prussia, PA, United StatesHQ checked Sep 5, 2026	51-200	91 contacts →
	Partial evidence “25 Years Leading in Cybersecurity, and we’re just getting started.” Source: RevenueBase Database · checked Sep 5, 2026
18	Defy Security	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 5, 2026	51-200	89 contacts →
	Partial evidence “Defy Security was founded in 2017 with one primary goal: to change the cybersecurity buying experience by delivering value and service that is unmatched.” Source: RevenueBase Database · checked Sep 5, 2026
19	Vertek Corporation	Partial evidence	Burlington, VT, United StatesHQ checked Sep 5, 2026	51-200	81 contacts →
	Partial evidence “At Vertek, we deliver advanced cybersecurity solutions that empower businesses to protect their digital assets and achieve peace of mind.” Source: RevenueBase Database · checked Sep 5, 2026
20	Techguard Security	Partial evidence	O'fallon, IL, United StatesHQ checked Sep 5, 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 5, 2026
21	Apollo Information Systems	Partial evidence	Dallas, TX, United StatesHQ checked Sep 5, 2026	51-200	64 contacts →
	Partial evidence “Apollo Information Systems delivers intelligence-led cybersecurity solutions for government agencies, educational institutions, and enterprises.” Source: RevenueBase Database · checked Sep 5, 2026
22	Infosight, INC	Indirect evidence	Miami Lakes, FL, United StatesHQ checked Sep 5, 2026	11-50	63 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
23	Cyber Defense Technologies	Indirect evidence	Dulles, VA, United StatesHQ checked Sep 5, 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 5, 2026
24	Def-Logix, INC	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 5, 2026	51-200	58 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
25	Cyberforce Q	Partial evidence	Plymouth, MI, United StatesHQ checked Sep 5, 2026	11-50	56 contacts →
	Partial evidence “CyberForce\|Q has provided proven cybersecurity program advancements for over 30 years.” Source: RevenueBase Database · checked Sep 5, 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: oil and gas 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 oil and gas cybersecurity companies.
Partial evidence: Its own public description names part of oil and gas cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas 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 564 oil and gas cybersecurity companies based in the United States

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Oil and gas cybersecurity companies based in the United States at a glance

As of Sep 5, 2026

43.5%Verified-email coverage

35.7%Mobile-number coverage

17.2Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · Houston

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

276

11-50

200

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

3,9170–30

27031–60

361–90

190–180

32180+

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 oil and gas 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 the United States whose own description of what they do matches “oil and gas 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 oil and gas 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 oil and gas cybersecurity companies, 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, 4,223 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 5, 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 oil and gas cybersecurity 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 oil and gas cybersecurity companies are there based in the United States?

RevenueBase identified 564 oil and gas cybersecurity companies 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?

Guidepoint Security, headquartered in Reston, tops this list with the largest team on record.

Which city has the most oil and gas cybersecurity companies?

Houston leads with 23 headquartered companies, followed by New York (15) and Dallas (13).

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 4,223 verified decision-maker contacts tracked across these 564 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 5, 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.