Company lists · Data refreshed September 2026

Top 25 Attack surface management software companies based in the United States

Name: Attack surface management software 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 14, 2026 2,117 companies tracked

RevenueBase identified 2,117 attack surface management software companies headquartered in the United States as of September 2026 and tracks 114,765 professional contacts across them, including 56,511 with verified work emails. New York is the largest hub.

This list covers attack surface management software 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 14, 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 14, 2026 86% judged on-target in blind review

2,117Companies

114,765Contacts tracked

56,511Verified emails

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The 25 largest attack surface management software companies based in the United States

Ranked by team size

Top 25 of 2,117 attack surface management software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to attack surface management software 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	Palo Alto Networks	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 14, 2026	10001+	18,431 contacts →
	Indirect evidence “Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.” Source: RevenueBase Database · checked Sep 14, 2026
2	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 14, 2026	10001+	14,289 contacts →
	Indirect evidence “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Source: RevenueBase Database · checked Sep 14, 2026
3	Hackerone	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	n/a	6,058 contacts →
	Partial evidence “HackerOne is a global leader in Continuous Threat Exposure Management (CTEM) and the only solution provider that pairs the simultaneous trust of the Fortune 500 and the world's…” Source: RevenueBase Database · checked Sep 14, 2026
4	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 14, 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 14, 2026
5	Trellix	Indirect evidence	Plano, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,447 contacts →
	Indirect evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 14, 2026
6	Qualys	Indirect evidence	Foster City, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,058 contacts →
	Indirect evidence “Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Source: RevenueBase Database · checked Sep 14, 2026
7	Sentinelone	Indirect evidence	Mountain View, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,052 contacts →
	Indirect evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 14, 2026
8	Ivanti	Strong evidence	South Jordan, UT, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,691 contacts →
	Strong evidence “Ivanti is a global enterprise IT and security software company that provides the trusted data authority for AI-driven, autonomous endpoint management.” Source: RevenueBase Database · checked Sep 14, 2026
9	Tenable	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,173 contacts →
	Partial evidence “Tenable is the exposure management company, exposing and closing the cybersecurity gaps that erode business value, reputation and trust.” Source: RevenueBase Database · checked Sep 14, 2026
10	Beyondtrust	Indirect evidence	Johns Creek, GA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,669 contacts →
	Indirect evidence “BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Source: RevenueBase Database · checked Sep 14, 2026
11	Fortra	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,648 contacts →
	Indirect evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Sep 14, 2026
12	Thales Cybersecurity Products	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,252 contacts →
	Indirect evidence “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: RevenueBase Database · checked Sep 14, 2026
13	Guidepoint Security	Indirect evidence	Reston, VA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,232 contacts →
	Indirect evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 14, 2026
14	Imperva	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	10001+	1,217 contacts →
	Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 14, 2026
15	SNYK	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,188 contacts →
	Partial evidence “Snyk, the leader in secure AI software development, empowers organizations to build fast and stay secure by unleashing developer productivity and reducing business risk.” Source: RevenueBase Database · checked Sep 14, 2026
16	Forescout Technologies INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,181 contacts →
	Partial evidence “As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and…” Source: RevenueBase Database · checked Sep 14, 2026
17	Checkmarx	Indirect evidence	Paramus, NJ, United StatesHQ checked Sep 14, 2026	501-1,000	1,042 contacts →
	Indirect evidence “Checkmarx helps the world’s largest enterprises get ahead of application risk without slowing down development.” Source: RevenueBase Database · checked Sep 14, 2026
18	Zerofox	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 14, 2026	501-1,000	904 contacts →
	Indirect evidence “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Source: RevenueBase Database · checked Sep 14, 2026
19	Netenrich	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	501-1,000	889 contacts →
	Indirect evidence “Netenrich is redefining security operations by shifting the focus from "efficiency"(speed) to "efficacy"(comprehensive coverage).” Source: RevenueBase Database · checked Sep 14, 2026
20	Trustwave, A Levelblue Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	501-1,000	874 contacts →
	Indirect 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 14, 2026
21	Cyderes	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 14, 2026	1,001-5,000	844 contacts →
	Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 14, 2026
22	Bitsight	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	501-1,000	752 contacts →
	Indirect evidence “Bitsight is the global leader in cyber risk intelligence, leveraging advanced AI to empower organizations with precise insights derived from the industry’s most extensive external…” Source: RevenueBase Database · checked Sep 14, 2026
23	Claroty	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	725 contacts →
	Indirect evidence “Claroty has redefined cyber-physical systems (CPS) protection with an unrivaled industry-centric platform built to secure mission-critical infrastructure.” Source: RevenueBase Database · checked Sep 14, 2026
24	Sysdig	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	501-1,000	659 contacts →
	Indirect evidence “Good-enough security isn’t good enough.” Source: RevenueBase Database · checked Sep 14, 2026
25	Vectra AI	Partial evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	501-1,000	651 contacts →
	Partial evidence “Vectra AI is the cybersecurity AI leader in protecting modern networks from modern attacks.” Source: RevenueBase Database · checked Sep 14, 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: attack surface management software 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 attack surface management software companies.
Partial evidence: Its own public description names part of attack surface management software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name attack surface management software 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 2,117 attack surface management software companies based in the United States

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Attack surface management software companies based in the United States at a glance

As of Sep 14, 2026

49.2%Verified-email coverage

54.2Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

991

11-50

734

51-200

256

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,117 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 attack surface management software 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 “attack surface management software 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 attack surface management software 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 attack surface management software 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, 56,511 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 14, 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.

Attack surface management software companies by metro

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 attack surface management software 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 attack surface management software companies are there based in the United States?

RevenueBase identified 2,117 attack surface management software 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?

Palo Alto Networks, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most attack surface management software companies?

New York leads with 101 headquartered companies, followed by San Francisco (76) and Austin (56).

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 56,511 verified decision-maker contacts tracked across these 2,117 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 14, 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.