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. Across the United States, New York is the largest hub for this category (200 companies); Tampa has 94.
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, 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.
The 25 largest managed security service providers based in Tampa, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,285 contacts → | ||||
Partial evidence “ReliaQuest exists to Make Security Possible.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 236 contacts → | ||||
Indirect evidence “NTG is where excellence meets innovation.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 202 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 73 contacts → | ||||
Partial evidence “Digital Hands is a managed service provider built for the real world.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 66 contacts → | ||||
Indirect evidence “Focal Point Data Risk is now a CDW company!” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 64 contacts → | ||||
Indirect evidence “CyberGlobal is the first and only cybersecurity franchise in the world.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 62 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 55 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 45 contacts → | ||||
Strong evidence “IT Authorities, a WidePoint company, is a Managed Service Provider (MSP) and a Managed Security Services Provider (MSSP) headquartered in Tampa, Florida.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 39 contacts → | ||||
Indirect evidence “As America's #1 ranked MSSP on the Inc.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 37 contacts → | ||||
Strong evidence “ConnectOn is a leading Managed Service, Security Service Provider, and Ransomware Remediation Company committed to helping companies around the globe maintain peak business…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 31 contacts → | ||||
Indirect evidence “Minority and veteran owned, TMPC is a small business tasked with top-level cybersecurity for numerous agencies in the federal government.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 21 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 21 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Indirect evidence “CASTLEGARDE INC is a company based out of 4911 S WEST SHORE BLVD, TAMPA, Florida, United States.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 13 contacts → | ||||
Indirect evidence “An 8(a), EDWOSB, SDVOSB, and CMMC-C3PAO firm specializing in cybersecurity, information technology, and workforce development for federal agencies.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 10 contacts → | ||||
Indirect evidence “Aerobyte's mission is to remove the Wild Wild West from the World Wide Web.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 9 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 9 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence “For more than two decades Diversicom has empowered growth-focused businesses to become more efficient, productive and ultimately profitable.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 contacts → | ||||
Partial evidence “Perseus Information Security Consulting is a leader in delivering tailored cybersecurity solutions across Automotive (TISAX), Financial Services (SWIFT CSP Assessments), and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 8 contacts → | ||||
Indirect evidence “Ready to Achieve Next-Level Performance?” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Indirect evidence “DG Technology helps organizations reduce risk and stay compliant in a world where threats, tools, and budgets change fast.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Partial evidence “Ideal Technologies, LLC is a premier provider of managed IT, cloud, and cybersecurity services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
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: managed security service providers. 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 managed security service providers.
- Partial evidence
- Its own public description names part of managed security service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name managed security service providers. 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 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 14, 2026Companies by employee count
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 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 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 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.
- 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 managed security service providers), 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 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 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, 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 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.
Managed security service providers by metro in the United States
- Managed security service providers in New York200
- Managed security service providers in Houston120
- Managed security service providers in Austin117
- Managed security service providers in Atlanta114
- Managed security service providers in Washington107
- Managed security service providers in Miami106
- Managed security service providers in Chicago100
- Managed security service providers in Dallas100
- Managed security service providers in San Francisco86
- Managed security service providers in Charlotte61
- Managed security service providers in Los Angeles60
- Managed security service providers in Columbia56
- Managed security service providers in Arlington54
- Managed security service providers in San Diego53
- Managed security service providers in Denver52
- Managed security service providers in Orlando52
- Managed security service providers in Boston51
- Managed security service providers in Las Vegas51
- Managed security service providers in San Antonio48
- Managed security service providers in Phoenix47
- Managed security service providers in Seattle39
- Managed security service providers in Reston38
- Managed security service providers in Wilmington38
- Managed security service providers in Alexandria37
- Managed security service providers in Irvine36
- Managed security service providers in Mclean36
- Managed security service providers in Fairfax34
- Managed security service providers in Raleigh33
- Managed security service providers in Huntsville32
- Managed security service providers in Portland32
- Managed security service providers in San Jose31
- Managed security service providers in Baltimore30
- Managed security service providers in Pittsburgh30
- Managed security service providers in Scottsdale30
- Managed security service providers in Plano29
- Managed security service providers in Fort Lauderdale28
- Managed security service providers in Colorado Springs27
- Managed security service providers in Ashburn26
- Managed security service providers in Dover26
- Managed security service providers in Richmond25
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 managed security service providers, 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 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 in the United States has the most managed security service providers?
New York leads the United States with 200 headquartered companies, followed by Houston (120) and Austin (117). Tampa has 94.
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 14, 2026.
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Managed security service providers by geography
- Managed security service providers based in the United States
- Managed security service providers based in the United Kingdom
- Managed security service providers based in Canada
- Managed security service providers based in Australia
- Managed security service providers based in France
- Managed security service providers based in Brazil
- Managed security service providers based in Germany
- Managed security service providers based in Spain
- Managed security service providers based in the Netherlands
- Managed security service providers based in Italy
- Managed security service providers based in South Africa
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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.
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