Company lists · Data refreshed September 2026

Top 25 Software vulnerability assessment companies based in the United States

RevenueBase identified 1,287 software vulnerability assessment companies headquartered in the United States as of September 2026 and tracks 29,732 professional contacts across them, including 9,422 with verified work emails and 6,589 with mobile numbers. San Francisco is the largest hub.

This list covers software vulnerability assessment 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 6, 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 6, 2026 86% judged on-target in blind review
1,287Companies
29,732Contacts tracked
9,422Verified emails
6,589Mobile numbers
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The 25 largest software vulnerability assessment companies based in the United States

Ranked by team size
Top 25 of 1,287 software vulnerability assessment companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software vulnerability assessment 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026n/a6,058 contacts →

“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: company website · checked Sep 6, 2026
2Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026n/a3,649 contacts →

“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: company website · checked Sep 6, 2026
3Indirect evidenceReston, VA, United StatesHQ checked Sep 6, 20261,001-5,0001,232 contacts →

“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.”

Source: company website · checked Sep 6, 2026
4Partial evidenceBoston, MA, United StatesHQ checked Sep 6, 20261,001-5,0001,188 contacts →

“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: company website · checked Sep 6, 2026
5Indirect evidenceParamus, NJ, United StatesHQ checked Sep 6, 2026501-1,0001,042 contacts →

“Checkmarx helps the world’s largest enterprises get ahead of application risk without slowing down development.”

Source: company website · checked Sep 6, 2026
6Indirect evidenceChicago, IL, United StatesHQ checked Sep 6, 2026501-1,000874 contacts →

“Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.”

Source: company website · checked Sep 6, 2026
7Indirect evidenceAustin, TX, United StatesHQ checked Sep 6, 2026n/a813 contacts →

“The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceBurlington, MA, United StatesHQ checked Sep 6, 2026501-1,000552 contacts →

“Veracode is a global leader in Application Risk Management for the AI era.”

Source: company website · checked Sep 6, 2026
9Indirect evidenceBurlington, MA, United StatesHQ checked Sep 6, 2026201-500486 contacts →

“Pentera provides AI-powered Automated Security Validation for enterprise security teams.”

Source: company website · checked Sep 6, 2026
10Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026201-500350 contacts →

“Cobalt is the pioneer in pentesting as a service and a leader in offensive security services.”

Source: company website · checked Sep 6, 2026
11Indirect evidenceTempe, AZ, United StatesHQ checked Sep 6, 2026201-500344 contacts →

“Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…”

Source: company website · checked Sep 6, 2026
12Indirect evidenceNashville, TN, United StatesHQ checked Sep 6, 2026201-500272 contacts →

“Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.”

Source: company website · checked Sep 6, 2026
13Indirect evidenceCedar Hill, TX, United StatesHQ checked Sep 6, 2026201-500255 contacts →

“Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.”

Source: company website · checked Sep 6, 2026
14Indirect evidenceAlbuquerque, NM, United StatesHQ checked Sep 6, 2026201-500244 contacts →

“Securin is obsessed with helping leaders continuously improve their security posture.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceChantilly, VA, United StatesHQ checked Sep 6, 2026201-500220 contacts →

“For over 20 years, leading companies in Telecom, Cybersecurity, Healthcare, Banking, New Media, and more have come to rely on Loginsoft as a trusted resource for technology talent.”

Source: company website · checked Sep 6, 2026
16Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202651-200208 contacts →

“TAC Security (NSE: TAC) TAC Security, a leading publicly listed global cybersecurity company specializing in vulnerability management, today serves clients across 100 countries…”

Source: company website · checked Sep 6, 2026
17Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 6, 2026n/a206 contacts →

“A veteran-owned cybersecurity company focused on penetration testing, security training, and compliance.”

Source: company website · checked Sep 6, 2026
18Indirect evidenceReston, VA, United StatesHQ checked Sep 6, 20261,001-5,000204 contacts →

“MindPoint Group, a Quantum Sky company, is a cybersecurity specialist trusted by U.S.”

Source: company website · checked Sep 6, 2026
19Partial evidenceNY, United StatesHQ checked Sep 6, 2026201-500186 contacts →

“Kualitatem empowers businesses to deliver quality software.”

Source: company website · checked Sep 6, 2026
20Indirect evidenceGlobally Distributed, United StatesHQ checked Sep 6, 2026201-500182 contacts →

“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: company website · checked Sep 6, 2026
21Indirect evidenceChantilly, VA, United StatesHQ checked Sep 6, 20261,001-5,000170 contacts →

“Trusted By 2,880+ World-Class Brands And Organizations Of All Sizes…!”

Source: company website · checked Sep 6, 2026
22Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-200167 contacts →

“ValueMentor is a global information security consulting & services company that delivers real results to global business in maximizing cybersecurity.”

Source: company website · checked Sep 6, 2026
23Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202651-200167 contacts →

“Fluid Attacks helps companies prevent, detect, manage and remediate vulnerabilities across their application attack surface.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceColchester, VT, United StatesHQ checked Sep 6, 202651-200151 contacts →

“nuHarbor is a U.S-based cybersecurity firm trusted by public sector and critical infrastructure organizations nationwide.”

Source: company website · checked Sep 6, 2026
25Indirect evidenceLos Altos, CA, United StatesHQ checked Sep 6, 202651-200149 contacts →

“AttackIQ® is trusted by top organizations worldwide to validate security controls in real time.”

Source: company website · checked Sep 6, 2026

Showing 25 of 1,287 software vulnerability assessment companies based in the United States

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Software vulnerability assessment companies based in the United States at a glance

As of Sep 6, 2026
31.7%Verified-email coverage
22.2%Mobile-number coverage
23.1Average contacts per company
1-10Median size (employees)
4.0%Largest-city concentration · San Francisco
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
769
11-50
391
51-200
91
201-500
24
501-1,000
3
1,001-5,000
8
5,001-10,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 software vulnerability assessment 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 “software vulnerability assessment 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 software vulnerability assessment 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 software vulnerability assessment 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, 9,422 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 6, 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 software vulnerability assessment 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 software vulnerability assessment companies are there based in the United States?

RevenueBase identified 1,287 software vulnerability assessment 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?

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

Which city has the most software vulnerability assessment companies?

San Francisco leads with 51 headquartered companies, followed by New York (47) and Austin (30).

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 9,422 verified decision-maker contacts tracked across these 1,287 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 6, 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.