Company lists · Data refreshed November 2026

Top 23 Telecom penetration testing companies based in the United States

RevenueBase identified 336 company matches for telecom penetration testing companies associated with the United States as of November 2026 and tracks 4,142 professional contacts across them, including 1,791 with verified work emails. New York is the largest hub.

This list covers company matches for telecom penetration testing companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
336Companies
4,142Contacts tracked
1,791Verified emails
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The 23 largest telecom penetration testing companies based in the United States

Ranked by team size
Top 23 of 336 company matches for telecom penetration testing companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 2026501-1,000608 contacts →

Exact match

“NetSPI® pioneered Penetration Testing as a Service (PTaaS) and leads the industry in modern, continuous pentesting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchTempe, AZ, United StatesHQ recorded Nov 6, 2026201-500357 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026201-500335 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchRedwood City, CA, United StatesHQ recorded Nov 6, 2026201-500224 contacts →

Exact match

“Synack is the leader in human-led and agentic AI-powered Penetration Testing as a Service (PTaaS), transforming offensive security to help organizations proactively reduce risk…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202651-200102 contacts →

Exact match

“DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLinthicum Heights, MD, United StatesHQ recorded Nov 6, 202651-200101 contacts →

Exact match

“About Us Net Research (Net) is a global leader in providing service verification tools and telecom management and analysis products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchGaithersburg, MD, United StatesHQ recorded Nov 6, 2026201-50081 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“OnDefend specializes in advanced cybersecurity testing that delivers ongoing security validation across the most complex technology environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 202611-5065 contacts →

Exact match

“SandTech Solutions is a Certified 8a member as well as a Service Disabled Veteran-Owned Small Business (SDVOSB).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBrookfield, MO, United StatesHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“SynerComm strengthens your cybersecurity and network defenses across your entire technology stack.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“Founded in 2010, Secure Ideas is a small-business consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGrand Rapids, MI, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“VDA Labs is on a mission to make the world a safer place through improved Cyber Security!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHerndon, VA, United StatesHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“Sphinx Solutions is an entrepreneurial cyber security company that helps private- and public-sector organizations take advantage of solutions that match today’s security…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSunnyvale, CA, United StatesHQ recorded Nov 6, 20261,001-5,00035 contacts →

Exact match

“Proactively reduce security risks, including those introduced by AI-driven development, with HCL AppScan, a scalable application security platform that helps teams securely…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“Red Sentry delivers expert-led penetration testing to help businesses identify and fix security vulnerabilities before attackers can exploit them.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAll Over The Us, United StatesHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“With offices all over the United States and Canada, Atredis Partners was created by a number of security industry veterans who wanted to prioritize offering quality and client…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMiami, FL, United StatesHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“ONSEC.io - is a penetration testing & in-depth security audit company with more than 13 years of experience on the market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Rhino Security Labs is a top penetration testing and security assessment firm with a focus on cloud pentesting (AWS, GCP, Azure), network pentesting, web application pentesting…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSpringfield, VA, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“Quest Consultants LLC DBA Aerstone is an NSA-Certified Vulnerability Assessor (NSA VAS) and Service-Disabled Veteran-Owned Small Business (SDVOSB) that provides subject matter…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“vPenTest from Vonahi Security, a Kaseya company, is the leading SaaS platform that's revolutionizing network penetration testing through automation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPittsburgh, PA, United StatesHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Ethical Intruder is a Pittsburgh based cyber security services company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMichigan, MI, United StatesHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“AIE Solutions is a telecommunications consulting company focused on providing businesses with complete customer care and direct access to our Account Managers at no extra cost to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 23 of 336 telecom penetration testing companies based in the United States

See the full list, filter by size, metro and specialty, and access 1,791 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecom penetration testing companies based in the United States at a glance

As of Nov 6, 2026
43.2%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
6.2%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
200
11-50
106
51-200
17
201-500
8
501-1,000
1
1,001-5,000
4

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 336 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “telecom penetration testing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,791 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “telecom penetration testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom penetration testing companies are there based in the United States?

RevenueBase identified 336 company matches for telecom penetration testing companies associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Netspi tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecom penetration testing companies?

New York leads with 21 company records, followed by Austin (10) and Denver (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,791 professional contacts with verified work emails tracked across these 336 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 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 SmartSearch, 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.