Company lists · Data refreshed September 2026
Top 25 Security auditing firms based in Atlanta, United States
RevenueBase identified 77 security auditing firms headquartered in Atlanta, United States as of September 2026 and tracks 577 professional contacts across them, including 252 with verified work emails. New York is the largest hub.
This list covers security auditing 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 auditing firms based in Atlanta, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | OSC EdgeIndirect evidence | 150 | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | ScybersIndirect evidence | 89 | |||
“Scybers is a pure-play global cybersecurity firm.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 63 | ||||
“As cyber-threats and regulatory mandates continue to expand, organizations are challenged by the difficulties of implementing effective cybersecurity and compliance programs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | TrustnetIndirect evidence | 33 | |||
“Since 2003, TrustNet has helped organizations mitigate cyber risks and achieve compliance efficiently and proactively.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 28 | ||||
“Red Sentry delivers expert-led penetration testing to help businesses identify and fix security vulnerabilities before attackers can exploit them.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 15 | ||||
“HanaByte is a cybersecurity consultancy offering comprehensive services such as cloud security, security engineering, and compliance advisory services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 13 | ||||
“Keeping up with the changing data security and compliance requirements is a full-time job.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 11 | ||||
“Serket-Tech Security helps organizations transform compliance requirements into security advantages.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 10 | ||||
“NCC Group is a leading global information assurance firm, providing freedom from doubt that all critical material is available, protected, and operating as it should be at all…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 | ||||
“AssurancePoint is a quality-focused information security audit and compliance advisory firm.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | SureshieldPartial evidence | 9 | |||
“SureShield serves leading healthcare, finance, defense, manufacturing, and other industries, as well as Managed Service Providers, focused on IT risk, security and compliance.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 | ||||
“Design Compliance and Security is a leading provider of compliance and security services to businesses of all sizes throughout the United States.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 | ||||
“Pillar Technology Partners helps mid-sized organizations protect the data that matters most.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 | ||||
“Delivers high quality innovative cyber security solutions that help protect clients from malicious activity.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 | ||||
“StealthNet AI is a technology driven cybersecurity company founded by offensive security professionals with real world testing backgrounds.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 | ||||
“Founded in 2012, Stratigos Security provides consulting services on information security programs, strategy, and policy for businesses of every size.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 | ||||
“Founded in 2020, Kailash is a specialized consultancy firm focused on cybersecurity, risk, and compliance services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Opus Business TechnologiesPartial evidence | 2 | |||
“Opus is a cyber security firm headquartered out of Atlanta Georgia.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | MirabilityIndirect evidence | 2 | |||
“Mirability helps organizations keep IT and OT systems secure and compliant through its assess–guide–execute methodology.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 | ||||
“Firebrand Security Consulting is a professional services firm, specializing in cyber security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 | ||||
“We provide our clients with consistent, process-driven outcomes that will be infused into your organization.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | Itrust Holdings INCPartial evidence | 1 | |||
“iTrust provides cybersecurity and compliance solutions to help Web3 businesses build trust and security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 77 security auditing firms based in Atlanta, United States
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Security auditing firms based in Atlanta, United States at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Atlanta, over 77 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 auditing firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 auditing firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security auditing 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 an evidence 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, 252 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 6, 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 auditing firms by metro in the United States
- Security auditing firms in New York86
- Security auditing firms in Atlanta77
- Security auditing firms in Austin67
- Security auditing firms in Houston66
- Security auditing firms in Tampa64
- Security auditing firms in Washington64
- Security auditing firms in Chicago58
- Security auditing firms in Dallas54
- Security auditing firms in Miami50
- Security auditing firms in San Francisco50
- Security auditing firms in Los Angeles43
- Security auditing firms in San Diego36
- Security auditing firms in Arlington33
- Security auditing firms in Charlotte32
- Security auditing firms in Seattle31
- Security auditing firms in Las Vegas27
- Security auditing firms in Columbia26
- Security auditing firms in Denver26
Frequently asked
How many security auditing firms are there based in Atlanta, United States?
RevenueBase identified 77 security auditing 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?
OSC Edge, headquartered in Atlanta, tops this list with the largest team on record.
Which city has the most security auditing firms?
New York leads with 86 headquartered companies, followed by Atlanta (77) and Austin (67).
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 252 verified decision-maker contacts tracked across these 77 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 6, 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 SmartSearch, 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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