Company lists · Data refreshed September 2026

Top 25 Managed security service providers based in Tampa, United States

RevenueBase identified 94 managed security service providers headquartered in Tampa, United States as of September 2026 and tracks 2,544 professional contacts across them, including 1,451 with verified work emails. New York is the largest hub.

This list covers managed security service providers headquartered in Tampa, 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, how directly it supports the match, 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 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
94Companies
2,544Contacts tracked
1,451Verified emails
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The 25 largest managed security service providers based in Tampa, United States

Ranked by team size
Top 25 of 94 managed security service providers based in Tampa, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names managed security service providers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
ReliaquestPartial evidence
Tampa, FL, United StatesHQ checked Sep 5, 20261,001-5,0001,285

“ReliaQuest exists to Make Security Possible.”

Source: company website · checked Sep 5, 2026
2
NTGIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202651-200236

“NTG is where excellence meets innovation.”

Source: company website · checked Sep 5, 2026
3Tampa, FL, United StatesHQ checked Sep 5, 202651-200202

“As a Managed Service Provider recently voted "10 Most Promising Companies of 2023", Data-Tech has been helping business organizations succeed and grow through world class…”

Source: company website · checked Sep 5, 2026
4
Digital HandsPartial evidence
Tampa, FL, United StatesHQ checked Sep 5, 202651-20073

“Digital Hands is a managed service provider built for the real world.”

Source: company website · checked Sep 5, 2026
5Tampa, FL, United StatesHQ checked Sep 5, 2026201-50066

“Focal Point Data Risk is now a CDW company!”

Source: company website · checked Sep 5, 2026
6
CyberglobalIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202651-20064

“CyberGlobal is the first and only cybersecurity franchise in the world.”

Source: company website · checked Sep 5, 2026
7
Abacode, A Thrive CompanyIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202651-20062

“Abacode joined forces with Thrive, learn more here: https://thrivenextgen.com/thrive-acquires-grc-focused-abacode/ Founded in 2014, Abacode has redefined industry standards by…”

Source: company website · checked Sep 5, 2026
8
ConcertiumIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-5055

“Concertium is a complete cybersecurity partner equipped with the expertise and services to deliver end-to-end visibility and protection from evolving cyber threats.”

Source: company website · checked Sep 5, 2026
9Tampa, FL, United StatesHQ checked Sep 5, 202651-20045

“IT Authorities, a WidePoint company, is a Managed Service Provider (MSP) and a Managed Security Services Provider (MSSP) headquartered in Tampa, Florida.”

Source: company website · checked Sep 5, 2026
10
Ridge IT CyberIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-5039

“As America's #1 ranked MSSP on the Inc.”

Source: company website · checked Sep 5, 2026
11
ConnectonStrong evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-5037

“ConnectOn is a leading Managed Service, Security Service Provider, and Ransomware Remediation Company committed to helping companies around the globe maintain peak business…”

Source: company website · checked Sep 5, 2026
12
Tmpc INCIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202651-20031

“Minority and veteran owned, TMPC is a small business tasked with top-level cybersecurity for numerous agencies in the federal government.”

Source: company website · checked Sep 5, 2026
13
ĒlevātusIndirect evidence
Tampa, United StatesHQ checked Sep 5, 202611-5021

“Elevatus IT: Your Trusted Partner in Cybersecurity and IT Support At Elevatus IT, we specialize in providing top-tier cybersecurity and IT support services to doctors and lawyers…”

Source: company website · checked Sep 5, 2026
14
Securance ConsultingPartial evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-5021

“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.”

Source: company website · checked Sep 5, 2026
15
NavisecPartial evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-5017

“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…”

Source: company website · checked Sep 5, 2026
16
Castlegarde INCIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-5013

“CASTLEGARDE INC is a company based out of 4911 S WEST SHORE BLVD, TAMPA, Florida, United States.”

Source: company website · checked Sep 5, 2026
17Tampa, FL, United StatesHQ checked Sep 5, 202611-5013

“An 8(a), EDWOSB, SDVOSB, and CMMC-C3PAO firm specializing in cybersecurity, information technology, and workforce development for federal agencies.”

Source: company website · checked Sep 5, 2026
18
Aerobyte Cyber DefenseIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-5010

“Aerobyte's mission is to remove the Wild Wild West from the World Wide Web.”

Source: company website · checked Sep 5, 2026
19
Roebuck TechnologiesPartial evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-509

“As an innovative managed services provider and value-added reseller, Roebuck Technologies offers a flexible monitoring platform customized for the needs of each client.”

Source: company website · checked Sep 5, 2026
20Tampa, FL, United StatesHQ checked Sep 5, 202651-2009

“Founded in 2003, Zymphony Technology Solutions, is a premier provider that helps companies more efficiently manage and protect their IT infrastructure by providing a wide range of…”

Source: company website · checked Sep 5, 2026
21
Diversicom CorporationIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-508

“For more than two decades Diversicom has empowered growth-focused businesses to become more efficient, productive and ultimately profitable.”

Source: company website · checked Sep 5, 2026
22Tampa, FL, United StatesHQ checked Sep 5, 20261-108

“Perseus Information Security Consulting is a leader in delivering tailored cybersecurity solutions across Automotive (TISAX), Financial Services (SWIFT CSP Assessments), and…”

Source: company website · checked Sep 5, 2026
23
Cyber Defense AdvisorsIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202611-508

“Ready to Achieve Next-Level Performance?”

Source: company website · checked Sep 5, 2026
24
DG Technology ConsultingIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 20261-107

“DG Technology helps organizations reduce risk and stay compliant in a world where threats, tools, and budgets change fast.”

Source: company website · checked Sep 5, 2026
25
Ideal TechnologysPartial evidence
Tampa, FL, United StatesHQ checked Sep 5, 20261-106

“Ideal Technologies, LLC is a premier provider of managed IT, cloud, and cybersecurity services.”

Source: company website · checked Sep 5, 2026

Showing 25 of 94 managed security service providers based in Tampa, United States

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Managed security service providers based in Tampa, United States at a glance

As of Sep 5, 2026
11-50Median size (employees)
New YorkLargest hub · 200 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
46
11-50
33
51-200
11
201-500
2
501-1,000
1
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Tampa, over 94 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 managed security service providers, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Tampa, United States whose own description of what they do matches “managed security service providers”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among managed security service providers, and records with no verified work email. Companies headquartered outside Tampa 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 an evidence 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, 1,451 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.

Managed security service providers by metro in the United States

Frequently asked

How many managed security service providers are there based in Tampa, United States?

RevenueBase identified 94 managed security service providers headquartered in Tampa, 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?

Reliaquest, headquartered in Tampa, tops this list with the largest team on record.

Which city has the most managed security service providers?

New York leads with 200 headquartered companies, followed by Houston (120) and Austin (117).

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 1,451 verified decision-maker contacts tracked across these 94 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 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.