Company lists · Data refreshed September 2026
Top 25 Cyber defense companies based in Atlanta, United States
RevenueBase identified 78 cyber defense companies headquartered in Atlanta, United States as of September 2026 and tracks 601 professional contacts across them, including 220 with verified work emails. New York is the largest hub.
This list covers cyber defense companies 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 21, 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 cyber defense companies based in Atlanta, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 89 contacts → | ||||
Indirect evidence “Scybers is a pure-play global cybersecurity firm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 55 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 26 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 18 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 14 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 11 contacts → | ||||
Indirect evidence “Serket-Tech Security helps organizations transform compliance requirements into security advantages.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 8 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 8 contacts → | ||||
Indirect evidence “Symbiosis.io: Securing the Future with Intelligent Convergence.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Indirect evidence “At Cittadella, we're not just providing security solutions but revolutionizing security for the modern world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Indirect evidence “Satine Technologies is a cybersecurity and software engineering firm specializing in delivering comprehensive security solutions, DevSecOps implementation, and advanced software…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Partial evidence “Delivers high quality innovative cyber security solutions that help protect clients from malicious activity.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Indirect evidence “We combine pre-breach due diligence with on-site security engineering and triage services to provide our clients with the expertise, tools, and workforce they need to better…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Indirect evidence “StealthNet AI is a technology driven cybersecurity company founded by offensive security professionals with real world testing backgrounds.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Indirect evidence “Information Secured is a certified minority-owned, technology reseller & services company, that specializes in navigating and mastering the complexities of cybersecurity.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Indirect evidence “GoTime Digital | The Apex Circuit Collective At GoTime Digital, we don’t just provide IT solutions-we engineer high-performance business acceleration through Cybersecurity…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Partial evidence “Trusted advisors and systems integrators in cybersecurity, cyber advisory services, advanced networking, and full-stack observability” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Partial evidence “Opus is a cyber security firm headquartered out of Atlanta Georgia.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “Firebrand Security Consulting is a professional services firm, specializing in cyber security.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “At Relate Central, we focus on Cybersecurity Decision Intelligence aligning leadership behavior, risk awareness, and investment decisions to improve preparedness and reduce…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “With 10 years serving business needs for cybersecurity technologies and services, TargetProof has built its reputation on breadth of capabilities and speed to deliver exceptional…” Source: RevenueBase Database · checked Sep 21, 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: cyber defense 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 cyber defense companies.
- Partial evidence
- Its own public description names part of cyber defense companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cyber defense 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 78 cyber defense companies based in Atlanta, United States
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Cyber defense companies based in Atlanta, United States at a glance
As of Sep 21, 2026Companies by employee count
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 78 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 cyber defense 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 “cyber defense 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 cyber defense 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 cyber defense 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, 220 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 21, 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.
Cyber defense companies by metro in the United States
- Cyber defense companies in New York135
- Cyber defense companies in Washington93
- Cyber defense companies in Atlanta78
- Cyber defense companies in Austin77
- Cyber defense companies in Houston73
- Cyber defense companies in Dallas72
- Cyber defense companies in Miami70
- Cyber defense companies in Chicago58
- Cyber defense companies in San Francisco57
- Cyber defense companies in Columbia56
- Cyber defense companies in Tampa55
- Cyber defense companies in Arlington49
- Cyber defense companies in Reston46
- Cyber defense companies in San Antonio42
- Cyber defense companies in San Diego42
- Cyber defense companies in Los Angeles40
- Cyber defense companies in Boston39
- Cyber defense companies in Las Vegas36
- Cyber defense companies in Charlotte34
- Cyber defense companies in Denver34
- Cyber defense companies in Huntsville33
- Cyber defense companies in Mclean33
- Cyber defense companies in Orlando32
- Cyber defense companies in Phoenix31
- Cyber defense companies in Baltimore30
- Cyber defense companies in Sheridan30
- Cyber defense companies in Wilmington30
- Cyber defense companies in Alexandria29
- Cyber defense companies in Herndon29
- Cyber defense companies in Seattle28
- Cyber defense companies in San Jose26
- Cyber defense companies in Ashburn25
- Cyber defense companies in Fairfax25
- Cyber defense companies in Plano25
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 cyber defense companies, 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 cyber defense companies are there based in Atlanta, United States?
RevenueBase identified 78 cyber defense companies 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?
OSC Edge, headquartered in Atlanta, tops this list with the largest team on record.
Which city has the most cyber defense companies?
New York leads with 135 headquartered companies, followed by Washington (93) and Atlanta (78).
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 220 verified decision-maker contacts tracked across these 78 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 21, 2026.
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Cyber defense companies by geography
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- Cyber defense companies based in Vancouver, Canada
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- Cyber defense companies based in Bengaluru, India
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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