Company lists · Data refreshed October 2026

Top 25 Cybersecurity companies based in Atlanta, United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 154 companies tracked

Our directory lists 154 cybersecurity companies based in Atlanta, United States, with 1,124 professional contacts and 418 email addresses. The list was last updated in October 2026. Across the United States, New York is the largest hub for this category (358 companies); Atlanta has 154.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of October 1, 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 Oct 1, 2026 86% judged on-target in blind review

154Companies

1,124Contacts tracked

418Verified emails

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The 25 largest cybersecurity companies based in Atlanta, United States

Ranked by team size

Top 25 of 154 cybersecurity companies based in Atlanta, United States, ranked by team size, largest first. Data refreshed Oct 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity companies: 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	OSC Edge	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
2	Scybers	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	51-200	89 contacts →
	Strong evidence “Scybers is a pure-play global cybersecurity firm.” Source: RevenueBase Database · checked Oct 1, 2026
3	Leapfrog Services	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
4	Apptega	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	51-200	63 contacts →
	Strong evidence “As cyber-threats and regulatory mandates continue to expand, organizations are challenged by the difficulties of implementing effective cybersecurity and compliance programs.” Source: RevenueBase Database · checked Oct 1, 2026
5	Xtreme Solutions INC	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
6	Insuretrust	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	11-50	45 contacts →
	Indirect evidence “Located in the Atlanta, INSUREtrust is a pioneer in the cyber industry.” Source: RevenueBase Database · checked Oct 1, 2026
7	Fortuna Cysec	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
8	RED Sentry	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
9	Genix Cyber	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
10	Vonahi Security	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	11-50	24 contacts →
	Indirect evidence “vPenTest from Vonahi Security, a Kaseya company, is the leading SaaS platform that's revolutionizing network penetration testing through automation.” Source: RevenueBase Database · checked Oct 1, 2026
11	The Cyber Express By Cyble	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	11-50	22 contacts →
	Indirect evidence “The Cyber Express by Cyble is a publication that aims to provide the latest news and analysis about the information security industry.” Source: RevenueBase Database · checked Oct 1, 2026
12	Impac Labs	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	11-50	19 contacts →
	Indirect evidence “Safeguard your clouds with complete visibility of every cyber asset.” Source: RevenueBase Database · checked Oct 1, 2026
13	SYBA	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
14	Hanabyte	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
15	Voreas Laboratories	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	11-50	14 contacts →
	Indirect evidence “Voreas Laboratories is bringing to the market DARPA-funded and validated technologies.” Source: RevenueBase Database · checked Oct 1, 2026
16	NDNB	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
17	Serket-Tech Security	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	11-50	11 contacts →
	Indirect evidence “Serket-Tech Security helps organizations transform compliance requirements into security advantages.” Source: RevenueBase Database · checked Oct 1, 2026
18	Techoperators	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	1-10	9 contacts →
	Strong evidence “TechOperators is an early-stage VC firm focused on Cybersecurity.” Source: RevenueBase Database · checked Oct 1, 2026
19	Adversarial Risk Management	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
20	Black Breach Security Division ITS	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
21	symbiosis.io	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	1-10	8 contacts →
	Indirect evidence “Symbiosis.io: Securing the Future with Intelligent Convergence.” Source: RevenueBase Database · checked Oct 1, 2026
22	Cittadella LLC	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	1-10	7 contacts →
	Indirect evidence “At Cittadella, we're not just providing security solutions but revolutionizing security for the modern world.” Source: RevenueBase Database · checked Oct 1, 2026
23	Pillar Technology Partners, LLC	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	1-10	7 contacts →
	Indirect evidence “Pillar Technology Partners helps mid-sized organizations protect the data that matters most.” Source: RevenueBase Database · checked Oct 1, 2026
24	Efortresses, INC	Strong evidence	Atlanta, GA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
25	Infragard Atlanta Members Alliance Iama	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	501-1,000	6 contacts →
	Indirect evidence “This program is a partnership of businesses, the FBI, educational entities and the National Infrastructure Protection Center.” Source: RevenueBase Database · checked Oct 1, 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 companies. 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 companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity companies. 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 154 cybersecurity companies based in Atlanta, United States

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Cybersecurity companies based in Atlanta, United States at a glance

As of Oct 1, 2026

37.2%Verified-email coverage

7.3Average contacts per company

1-10Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 154 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 companies, 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 companies”. 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 companies), 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 companies, 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, 418 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 October 1, 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 companies by metro in the United States

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 154 cybersecurity companies based in Atlanta, United States.

Which city in the United States has the most cybersecurity companies?

New York leads the United States with 358 headquartered companies, followed by San Francisco (190) and Austin (187). Atlanta has 154.

How many contacts are available for cybersecurity companies?

The directory includes 1,124 professional contacts and 418 email addresses for the listed cybersecurity companies.

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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.