Company lists · Data refreshed September 2026

Top 25 Cybersecurity services firms based in Atlanta, United States

Name: Cybersecurity services firms based in Atlanta, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 139 companies tracked

RevenueBase identified 139 cybersecurity services firms headquartered in Atlanta, United States as of September 2026 and tracks 1,127 professional contacts across them, including 467 with verified work emails. New York is the largest hub.

This list covers cybersecurity services firms headquartered in Atlanta, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review

139Companies

1,127Contacts tracked

467Verified emails

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The 25 largest cybersecurity services firms based in Atlanta, United States

Ranked by team size

Top 25 of 139 cybersecurity services firms based in Atlanta, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity services firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Tekstream Solutions	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	178 contacts →
	Indirect evidence “Headquartered in Atlanta, Georgia, TekStream is a digital resilience company that helps organizations modernize, secure, and optimize their technology environments.” Source: RevenueBase Database · checked Sep 14, 2026
2	OSC Edge	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	150 contacts →
	Indirect evidence “From CND in the Cloud to CSfC with Enterprise Remote Capabilities, OSC Edge empowers organizations with solutions that prepare them for today and tomorrow.” Source: RevenueBase Database · checked Sep 14, 2026
3	Scybers	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	89 contacts →
	Strong evidence “Scybers is a pure-play global cybersecurity firm.” Source: RevenueBase Database · checked Sep 14, 2026
4	Leapfrog Services	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	76 contacts →
	Strong evidence “Leapfrog offers outsourced managed IT + cybersecurity services that are scalable, aligned, and fit easily into your business model.” Source: RevenueBase Database · checked Sep 14, 2026
5	Xtreme Solutions INC	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	55 contacts →
	Strong evidence “Xtreme Solutions, Inc.(XSI) is a Service-Disabled Veteran-Owned, Woman-Owned Small Business (SDVOSB, WOSB) delivering advanced information technology, cybersecurity training, and…” Source: RevenueBase Database · checked Sep 14, 2026
6	Century Solutions Group, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	41 contacts →
	Indirect evidence “For nearly 30 years, Century Solutions Group has helped small and mid-sized businesses across Atlanta improve security, productivity, and business growth through reliable Managed…” Source: RevenueBase Database · checked Sep 14, 2026
7	Fortuna Cysec	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	32 contacts →
	Indirect evidence “Fortuna Cysec delivers a comprehensive security ecosystem that seamlessly integrates with your existing infrastructure, offering end-to-end protection with the flexibility to…” Source: RevenueBase Database · checked Sep 14, 2026
8	RED Sentry	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	28 contacts →
	Indirect evidence “Red Sentry delivers expert-led penetration testing to help businesses identify and fix security vulnerabilities before attackers can exploit them.” Source: RevenueBase Database · checked Sep 14, 2026
9	Genix Cyber	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	26 contacts →
	Strong evidence “Genix Cyber - Empowering Cybersecurity Excellence Welcome to Genix Cyber, a distinguished US-based advisory firm founded by former CISOs and Auditors.” Source: RevenueBase Database · checked Sep 14, 2026
10	Impac Labs	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	19 contacts →
	Indirect evidence “Safeguard your clouds with complete visibility of every cyber asset.” Source: RevenueBase Database · checked Sep 14, 2026
11	SYBA	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	18 contacts →
	Indirect evidence “About Syba Syba is your smart, silent cyber-bodyguard, protecting you, your family, and your business from the digital threats of everyday life.” Source: RevenueBase Database · checked Sep 14, 2026
12	Hanabyte	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	15 contacts →
	Strong evidence “HanaByte is a cybersecurity consultancy offering comprehensive services such as cloud security, security engineering, and compliance advisory services.” Source: RevenueBase Database · checked Sep 14, 2026
13	NDNB	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	14 contacts →
	Strong evidence “Founded in part by former Arthur Andersen and BDO professionals, the NDNB Alliance of Firms is a nationally recognized group of entities specializing in cybersecurity, data…” Source: RevenueBase Database · checked Sep 14, 2026
14	Cyberdata Pros	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	13 contacts →
	Indirect evidence “Keeping up with the changing data security and compliance requirements is a full-time job.” Source: RevenueBase Database · checked Sep 14, 2026
15	Serket-Tech Security	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	11 contacts →
	Indirect evidence “Serket-Tech Security helps organizations transform compliance requirements into security advantages.” Source: RevenueBase Database · checked Sep 14, 2026
16	Odin Enterprises, LLC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	10 contacts →
	Indirect evidence “Odin Enterprises, LLC is a Georgia-based company founded as a security solutions provider specializing in the fields of crisis and risk management, insider threat mitigation…” Source: RevenueBase Database · checked Sep 14, 2026
17	Sureshield	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	9 contacts →
	Indirect evidence “SureShield serves leading healthcare, finance, defense, manufacturing, and other industries, as well as Managed Service Providers, focused on IT risk, security and compliance.” Source: RevenueBase Database · checked Sep 14, 2026
18	Adversarial Risk Management	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	1-10	8 contacts →
	Strong evidence “Adversarial Risk Management provides advisory services to cybersecurity startups and advisory work for fast-growing companies needing to establish an effective cyber program.” Source: RevenueBase Database · checked Sep 14, 2026
19	Black Breach Security Division ITS	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	8 contacts →
	Strong evidence “Since 2015, Black Breach has established itself as an experienced-based, client-driven cybersecurity consulting and special services firm.” Source: RevenueBase Database · checked Sep 14, 2026
20	symbiosis.io	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	1-10	8 contacts →
	Indirect evidence “Symbiosis.io: Securing the Future with Intelligent Convergence.” Source: RevenueBase Database · checked Sep 14, 2026
21	Pillar Technology Partners, LLC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Indirect evidence “Pillar Technology Partners helps mid-sized organizations protect the data that matters most.” Source: RevenueBase Database · checked Sep 14, 2026
22	Efortresses, INC	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Strong evidence “eFortresses, Inc.(a Gartner 2013 Cool Vendor) is a AI powered Cybersecurity SaaS company that allows our customers to self-assess, get validated, get trained, get certified, and…” Source: RevenueBase Database · checked Sep 14, 2026
23	Imaginex	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	5 contacts →
	Indirect evidence “ImagineX is a leading digital services firm whose mission is to help our clients and technologists to #BeBetter.” Source: RevenueBase Database · checked Sep 14, 2026
24	The Onyx IT Group	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	5 contacts →
	Indirect evidence “We are a managed security services provider with more than 25 years of experience providing innovative technology to businesses of all sizes.” Source: RevenueBase Database · checked Sep 14, 2026
25	maxdefense.io	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	11-50	4 contacts →
	Indirect evidence “MaxDefense LLC is a Managed Security Services Provider (MSSP) headquartered in Duluth, GA.” Source: RevenueBase Database · checked Sep 14, 2026

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: cybersecurity services firms. 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 cybersecurity services firms.
Partial evidence: Its own public description names part of cybersecurity services firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity services firms. 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 139 cybersecurity services firms based in Atlanta, United States

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Cybersecurity services firms based in Atlanta, United States at a glance

As of Sep 14, 2026

41.4%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

184.9%Largest-city concentration · New York

Sep 14, 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 Atlanta, so it is reported there. Company counts and contact totals on this page are exact for Atlanta, over 139 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 cybersecurity services firms, 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 Atlanta, United States whose own description of what they do matches “cybersecurity services firms”. 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 cybersecurity services firms), 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 cybersecurity services firms, and records with no verified work email. Companies headquartered outside Atlanta 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, 467 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.

Cybersecurity services firms by metro in the United States

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 cybersecurity services firms, 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 cybersecurity services firms are there based in Atlanta, United States?

RevenueBase identified 139 cybersecurity services firms headquartered in Atlanta, 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?

Tekstream Solutions, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most cybersecurity services firms?

New York leads with 257 headquartered companies, followed by Washington (154) and Austin (153).

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 467 verified decision-maker contacts tracked across these 139 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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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.