Company lists · Data refreshed September 2026
Top 25 Security design firms based in Atlanta, United States
RevenueBase identified 83 security design firms headquartered in Atlanta, United States as of September 2026 and tracks 774 professional contacts across them, including 242 with verified work emails. Across the United States, New York is the largest hub for this category (148 companies); Atlanta has 83.
This list covers security design 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 29, 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 security design firms based in Atlanta, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 126 contacts → | ||||
Indirect evidence “Fire Safety & Protection, LLC (FSP) was formed by Sunny River Management in 2018 to build a premier fire & life safety business with a continental reach covering the U.S.” Source: RevenueBase Database · checked Sep 29, 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 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 81 contacts → | ||||
Indirect evidence “We believe that our commitment to selection, training, supervision, and customer service make the difference.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 54 contacts → | ||||
Indirect evidence “Carter Brothers was founded in by 2013 NFL Hall of Fame Inductee, Chairman, Cris Carter and his brother, John F.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 44 contacts → | ||||
Partial evidence “Founded in 2001, ALL N ONE is one of the nation’s largest and most experienced, fully-certified security firms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 42 contacts → | ||||
Partial evidence “Altus Fire & Life Safety is a full-service fire protection, life safety and security platform committed to protecting lives, property, and business continuity.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 35 contacts → | ||||
Indirect evidence “Hawque Protection Group was founded in 2020 because we understand that protection is a top priority in this day and age due to a decreased police force and a growing criminal…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 31 contacts → | ||||
Strong evidence “Since 1981, Alscan has been a leader in providing design, installation and maintenance of advanced security systems for commercial, industrial, medical and educational…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 26 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 18 contacts → | ||||
Partial evidence “PM Security Permitting provides expert consulting and permitting services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 contacts → | ||||
Partial evidence “HanaByte is a cybersecurity consultancy offering comprehensive services such as cloud security, security engineering, and compliance advisory services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 contacts → | ||||
Partial evidence “Our team of subject matter experts bring decades of global security experience in some of the most complex and austere environments around the planet.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Partial evidence “Serket-Tech Security helps organizations transform compliance requirements into security advantages.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Strong evidence “We are a Managed Services Security Provider that designs, installs, and services security and fire alarm systems, access control systems, and video surveillance systems.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 contacts → | ||||
Partial evidence “At Cittadella, we're not just providing security solutions but revolutionizing security for the modern world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 7 contacts → | ||||
Indirect evidence “Pillar Technology Partners helps mid-sized organizations protect the data that matters most.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 contacts → | ||||
Indirect evidence “ABOUT US: SES is the top entry systems specialists in the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Partial evidence “Pritchard Global Alliance is a security-focused company based in Atlanta, GA, specializing in comprehensive security guard and surveillance services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Partial evidence “T4 Enterprises is a boutique security firm that exists to assess the security needs and implement security plans for celebrities, executives, politicians, local businesses, places…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Partial evidence “DMG & Co is a team of security experts dedicated to protecting and securing the things that matter most to you.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Partial evidence “We specialize in tackling security and safety challenges prevalent in corporate and industrial environments.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Trusted advisors and systems integrators in cybersecurity, cyber advisory services, advanced networking, and full-stack observability” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Sirko International is a group of highly trained professionals in effective Risk Management, Executive Protection, Private Investigations, Technical Services / Electronic…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Founded in 2020, Kailash is a specialized consultancy firm focused on cybersecurity, risk, and compliance services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Partial evidence “Opus is a cyber security firm headquartered out of Atlanta Georgia.” Source: RevenueBase Database · checked Sep 29, 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: security design 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 security design firms.
- Partial evidence
- Its own public description names part of security design firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security design 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 83 security design firms based in Atlanta, United States
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Security design firms based in Atlanta, United States at a glance
As of Sep 29, 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 83 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 security design 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 “security design 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 security design 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 security design 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, 242 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 29, 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.
Security design firms by metro in the United States
- Security design firms in New York148
- Security design firms in Houston105
- Security design firms in Los Angeles83
- Security design firms in Miami79
- Security design firms in Dallas65
- Security design firms in Washington56
- Security design firms in Austin55
- Security design firms in Chicago54
- Security design firms in Tampa50
- Security design firms in Phoenix41
- Security design firms in Charlotte40
- Security design firms in San Francisco39
- Security design firms in Denver37
- Security design firms in San Diego37
- Security design firms in Las Vegas35
- Security design firms in Seattle34
- Security design firms in Orlando31
- Security design firms in Arlington29
- Security design firms in Boston28
- Security design firms in San Antonio27
- Security design firms in Baltimore26
- Security design firms in Nashville26
- Security design firms in Indianapolis25
- Security design firms in Raleigh25
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 security design 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 security design firms are there based in Atlanta, United States?
RevenueBase identified 83 security design 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?
Fire Safety And Protection, LLC, headquartered in Atlanta, tops this list with the largest team on record.
Which city in the United States has the most security design firms?
New York leads the United States with 148 headquartered companies, followed by Houston (105) and Atlanta (83).
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 242 verified decision-maker contacts tracked across these 83 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 29, 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.
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