Company lists · Data refreshed September 2026
Top 11 Information security service providers based in Alpharetta, United States
RevenueBase identified 29 information security service providers headquartered in Alpharetta, United States as of September 2026 and tracks 1,095 professional contacts across them, including 444 with verified work emails. New York is the largest hub.
This list covers information security service providers headquartered in Alpharetta, 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 11 largest information security service providers based in Alpharetta, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 687 contacts → | ||||
Indirect evidence “Customers of all sizes globally rely on Simeio to help secure their organizations.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 120 contacts → | ||||
Partial evidence “With over 25 years of expertise, PDI Security and Network Solutions (formerly known as Nuspire) is redefining cybersecurity and network management through intelligent unification…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 108 contacts → | ||||
Indirect evidence “DefenseStorm serves US regional banks and credit unions exclusively.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 52 contacts → | ||||
Partial evidence “Secure Traces is a unique cyber security services provider with an impeccable track record of delivering outstanding services, we are driven by passion and backed by our extensive…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 33 contacts → | ||||
Indirect evidence “Cybriant, a certified Google Cloud SecOps Delivery and MSSP partner, helps companies make informed business decisions and sustain effectiveness through the design, implementation…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 21 contacts → | ||||
Partial evidence “Abricto Security is a team of security leaders, consultants, ethical hackers and cloud professionals working together to test and strengthen your company’s security posture.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 13 contacts → | ||||
Partial evidence “Founded in 2005, S3 is a specialized cyber security and global technology consulting firm focused solely on providing services to help clients overcome security challenges with…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 4 contacts → | ||||
Partial evidence “Elite consulting services for Penetration Testing, Application Assessments, Incident Response, Threat Hunt, Security Program, Compliance, and Advisory Programs.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3 contacts → | ||||
Indirect evidence “The nCloud Team is bringing our enterprise experience and solutions to small and medium businesses.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 3 contacts → | ||||
Partial evidence “At Network Digital Security (NDS), our mission is to empower public sector organizations to enhance their cybersecurity resilience.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3 contacts → | ||||
Partial evidence “Clear Skies is a security services company.” 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: information security service providers. 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 information security service providers.
- Partial evidence
- Its own public description names part of information security service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name information security service providers. 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 11 of 29 information security service providers based in Alpharetta, United States
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Information security service providers based in Alpharetta, 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 Alpharetta, so it is reported there. Company counts and contact totals on this page are exact for Alpharetta, over 29 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 information security service providers, 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 Alpharetta, United States whose own description of what they do matches “information security service providers”. 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 information security service providers), 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 information security service providers, and records with no verified work email. Companies headquartered outside Alpharetta 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, 444 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.
Information security service providers by metro in the United States
- Information security service providers in New York256
- Information security service providers in Houston153
- Information security service providers in Atlanta146
- Information security service providers in Washington144
- Information security service providers in Dallas140
- Information security service providers in Austin138
- Information security service providers in Chicago127
- Information security service providers in Miami127
- Information security service providers in Tampa103
- Information security service providers in San Francisco93
- Information security service providers in San Diego83
- Information security service providers in Los Angeles82
- Information security service providers in Charlotte73
- Information security service providers in Denver71
- Information security service providers in Arlington70
- Information security service providers in Boston64
- Information security service providers in Columbia60
- Information security service providers in Las Vegas60
- Information security service providers in Orlando59
- Information security service providers in San Antonio58
- Information security service providers in Seattle56
- Information security service providers in Alexandria53
- Information security service providers in Reston52
- Information security service providers in Phoenix51
- Information security service providers in Mclean48
- Information security service providers in Raleigh45
- Information security service providers in Baltimore43
- Information security service providers in Irvine43
- Information security service providers in Huntsville41
- Information security service providers in Sheridan41
- Information security service providers in Wilmington41
- Information security service providers in Ashburn40
- Information security service providers in Fairfax40
- Information security service providers in Portland39
- Information security service providers in Minneapolis37
- Information security service providers in Pittsburgh37
- Information security service providers in Indianapolis35
- Information security service providers in Plano35
- Information security service providers in Scottsdale35
- Information security service providers in Richmond34
- Information security service providers in San Jose34
- Information security service providers in Columbus33
- Information security service providers in Fort Lauderdale33
- Information security service providers in Colorado Springs32
- Information security service providers in Dover30
- Information security service providers in Nashville30
- Information security service providers in Alpharetta29
- Information security service providers in Herndon29
- Information security service providers in Philadelphia29
- Information security service providers in Vienna27
- Information security service providers in Frisco26
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 information security service providers, 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 information security service providers are there based in Alpharetta, United States?
RevenueBase identified 29 information security service providers headquartered in Alpharetta, 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?
Simeio, headquartered in Alpharetta, tops this list with the largest team on record.
Which city has the most information security service providers?
New York leads with 256 headquartered companies, followed by Houston (153) and Atlanta (146).
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 444 verified decision-maker contacts tracked across these 29 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.
Ready to reach these companies? Verified emails and direct dials for all 29 information security service providers based in Alpharetta, United States. Start with a free account, no credit card.
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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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