Company lists · Data refreshed September 2026

Top 17 Penetration testing service providers based in Tampa, United States

Name: Penetration testing service providers based in Tampa, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 39 companies tracked

RevenueBase identified 39 company matches for penetration testing service providers associated with Tampa, United States as of September 2026 and tracks 435 professional contacts across them, including 99 with verified work emails. Across the United States, New York is the largest hub for this category (78 companies); Tampa has 39.

This list covers company matches for penetration testing service providers associated with Tampa, 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 September 20, 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 Sep 20, 2026 How this list was built

39Companies

435Contacts tracked

99Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 17 largest penetration testing service providers based in Tampa, United States

Ranked by team size

Top 17 of 39 company matches for penetration testing service providers based in Tampa, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	NTG	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	51-200	236 contacts →
	Exact match “NTG is where excellence meets innovation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Securance Consulting	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	21 contacts →
	Exact match “For 25 years, Securance Consulting has been the firm that security, compliance, and IT risk leaders call when the work is too important to hand off to a junior team.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Navisec	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	17 contacts →
	Exact match “NaviSec empowers clients to obtain a higher level of IT security with uncommon clarity, flexibility, and confidence in an the ever-changing cyber security landscape through a…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Castlegarde INC	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	13 contacts →
	Exact match “CASTLEGARDE INC is a company based out of 4911 S WEST SHORE BLVD, TAMPA, Florida, United States.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Bestdefense, INC	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	13 contacts →
	Exact match “Continuous Security for Modern SaaS \| Automated Testing \| Real-Time Validation BestDefense.io empowers DevOps and engineering teams to build, ship, and scale with confidence.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Open-Sec	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	13 contacts →
	Exact match “Ethical hacking : Vulnerability Assessment, Penetration Testing, Source Code Security Testing, Apps Security Testing, ATM and PoS pentesting, transactional switches testing…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Threatmate	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	1-10	10 contacts →
	Exact match “ThreatMate delivers continuous, AI-powered penetration testing and vulnerability management that shows MSPs what’s actually exploitable across every client environment not just…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Cyber Defense Advisors	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	8 contacts →
	Exact match “Ready to Achieve Next-Level Performance?” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	DG Technology Consulting	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	1-10	7 contacts →
	Exact match “DG Technology helps organizations reduce risk and stay compliant in a world where threats, tools, and budgets change fast.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Velero	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	4 contacts →
	Exact match “Velero is a premier cybersecurity and compliance consulting firm dedicated to providing comprehensive solutions that empower businesses to secure their digital assets and achieve…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Launch GIG Your Search Starts Here	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	1-10	4 contacts →
	Exact match “Launch Gig is a Cybersecurity company serving Cyber security professionals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Goldsky Cyber Security	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	3 contacts →
	Exact match “GoldSky is a full service cyber security solutions firm that is privately owned and operated out of Tampa, Florida with resources in Orlando, Denver, Nashville, Boston, Washington…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Simplifycyber	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	11-50	2 contacts →
	Exact match “At SimplifyCyber, we specialize in operational and compliance risk management, offering customized services to businesses and organizations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Trifident	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Our services are delivered by professionals with real-world experience spanning US Government, Fortune 200, and critical infrastructure cyber operations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Cyqual Cybersecurity	Exact match	Tampa, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Cyqual provides cybersecurity advisory and engineering services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Arruda Group	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “The ARRUDA Group (AG) was founded by a team of senior executives who have years of experience at all levels of federal law enforcement, the intelligence community and the military.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	CSG Cyber Veteran Owned	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Cybersecurity services and products for all industries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “penetration testing service providers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 17 of 39 penetration testing service providers based in Tampa, United States

See the full list, filter by size, metro and specialty, and access 99 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Penetration testing service providers based in Tampa, United States at a glance

As of Sep 20, 2026

22.8%Verified-email coverage

11.2Average contacts per company

1-10Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Tampa, so it is reported there. Company counts and contact totals on this page are exact for Tampa, over 39 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 Tampa, United States whose business descriptions match “penetration testing service providers” 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 99 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 September 20, 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.

Penetration testing service providers by metro in the United States

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 “penetration testing service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many penetration testing service providers are there based in Tampa, United States?

RevenueBase identified 39 company matches for penetration testing service providers associated with Tampa, United States as of September 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?

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

Which city in the United States has the most penetration testing service providers?

New York leads the United States with 78 company records, followed by Atlanta (57) and San Francisco (54). Tampa has 39.

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 99 professional contacts with verified work emails tracked across these 39 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 September 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 39 penetration testing service providers based in Tampa, United States. Start with a free account, no credit card.

Download this list →

Related lists

Penetration testing service providers by geography

Browse the directory

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.