Company lists · Data refreshed September 2026
Top 23 Network security consulting firms based in San Diego, United States
RevenueBase identified 51 network security consulting firms headquartered in San Diego, United States as of September 2026 and tracks 305 professional contacts across them, including 146 with verified work emails. New York is the largest hub.
This list covers network security consulting firms headquartered in San Diego, 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 5, 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 23 largest network security consulting firms based in San Diego, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | NTH Generation ComputingPartial evidence | 89 | |||
“Since 1991, Nth Generation has provided industry leading, consultative IT services, encompassing a suite of IT and security solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | Templar ShieldPartial evidence | 49 | |||
“Templar Shield is a specialized risk, security, identity and AI governance advisory firm helping organizations operate with confidence in an increasingly automated, AI-driven…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | TaranetPartial evidence | 14 | |||
“Cyber Security Risk Management Taranet provides SME support to identify, mitigate, and manage cyber security risks.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | Holocom, INCPartial evidence | 13 | |||
“Holocom is the leading solutions provider of Protective Distribution Systems (PDS) for classified networks such as SIPRNet, JWICS, and other networks transmitting highly sensitive…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | TbdcyberIndirect evidence | 9 | |||
“TBDCyber is a cybersecurity company focused on strategy, assessments, and program build services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | FSO ConsultantsStrong evidence | 8 | |||
“FSO Consultants provides nationwide Facility Security consulting services for small businesses wishing to compete and perform on lucrative DoD related classified contracts.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 6 | ||||
“At Dispatch Tech, we're dedicated to securing your digital world.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 6 | ||||
“HannulaWells is a cyber security services provider, servicing enterprise level environments to SMB's.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | NexifyPartial evidence | 6 | |||
“Our Vision Nexify helps clients achieve operational efficiency, data security, and strategic tech integration, focusing on Artificial Intelligence, Data Governance, and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 5 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4 | ||||
“AggreGateway is an IT Network and Wireless Engineering consulting firm specializing in secure, high-performance connectivity solutions for public safety, education, government…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | SAN Diego IT ProsStrong evidence | 3 | |||
“IT Consulting firm based in San Diego, offering consulting on security, network management, infrastructure, cloud services, and more.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Somerset Recon, INCIndirect evidence | 3 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | Nextwave Solutions, INCPartial evidence | 3 | |||
“IT SECURITY ASSESSMENTS One of our goals is to empower businesses defend their critical data and sensitive information assets from the threat of cyber attacks.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | SystackitStrong evidence | 3 | |||
“SystackIT provides network, cloud based, and end-user security and training.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | Prometheus CybersecurityPartial evidence | 2 | |||
“Prometheus Cybersecurity is an information security company based out of San Diego, California.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2 | ||||
“CryptoCrack Network Solutions is dedicated to the continuous, stable and secure operation of computer network systems to assist our clients in improving their business performance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | Taro Technology LLCStrong evidence | 2 | |||
“Providing IT / security and consulting services to medium sized business” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 | ||||
“Atlant Security engineers the cybersecurity posture that enterprise procurement teams approve on sight.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 | ||||
“Executive Advisors Group, LLC helps organizations address security, privacy, risk, and other governance issues in a manner that is both pragmatic and effective.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 | ||||
“Geeky Clean Technology (GCT) is San Diego’s premier ethical IT consultancy, serving Pacific Beach, La Jolla, and Mount Soledad since 2006.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 | ||||
“Providing managed IT services with an emphasis on cybersecurity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | Retrofuture Innovations LLCStrong evidence | 1 | |||
“Our firm specializes in Data Privacy, Cybersecurity & Network Consulting Services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 23 of 51 network security consulting firms based in San Diego, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 146 reachable decision-makers.
Free signup · no credit card
Network security consulting firms based in San Diego, United States at a glance
As of Sep 5, 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 San Diego, over 51 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 network security consulting 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 San Diego, United States whose own description of what they do matches “network security consulting 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 network security consulting firms, and records with no verified work email. Companies headquartered outside San Diego 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, 146 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 5, 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.
Network security consulting firms by metro in the United States
- Network security consulting firms in New York134
- Network security consulting firms in Houston102
- Network security consulting firms in Washington98
- Network security consulting firms in Atlanta97
- Network security consulting firms in Austin90
- Network security consulting firms in Dallas85
- Network security consulting firms in Chicago79
- Network security consulting firms in Miami77
- Network security consulting firms in San Francisco64
- Network security consulting firms in Tampa63
- Network security consulting firms in Los Angeles56
- Network security consulting firms in Denver53
- Network security consulting firms in San Diego51
- Network security consulting firms in Charlotte50
- Network security consulting firms in Arlington49
- Network security consulting firms in Columbia46
- Network security consulting firms in Boston44
- Network security consulting firms in San Antonio41
- Network security consulting firms in Phoenix40
- Network security consulting firms in Seattle39
- Network security consulting firms in Las Vegas38
- Network security consulting firms in Orlando38
- Network security consulting firms in Alexandria35
- Network security consulting firms in Reston32
- Network security consulting firms in Baltimore31
- Network security consulting firms in Mclean31
- Network security consulting firms in Minneapolis31
- Network security consulting firms in Raleigh31
- Network security consulting firms in Fairfax28
- Network security consulting firms in Huntsville27
- Network security consulting firms in San Jose27
- Network security consulting firms in Sheridan27
- Network security consulting firms in Ashburn26
- Network security consulting firms in Columbus26
- Network security consulting firms in Scottsdale26
- Network security consulting firms in Wilmington25
Frequently asked
How many network security consulting firms are there based in San Diego, United States?
RevenueBase identified 51 network security consulting firms headquartered in San Diego, 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?
NTH Generation Computing, headquartered in San Diego, tops this list with the largest team on record.
Which city has the most network security consulting firms?
New York leads with 134 headquartered companies, followed by Houston (102) and Washington (98).
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 146 verified decision-maker contacts tracked across these 51 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 51 network security consulting firms based in San Diego, United States. Start with a free account, no credit card.
Get the full listRelated lists
Network security consulting firms by geography
- Network security consulting firms based in the United States
- Network security consulting firms based in the United Kingdom
- Network security consulting firms based in France
- Network security consulting firms based in Canada
- Network security consulting firms based in Brazil
- Network security consulting firms based in Australia
- Network security consulting firms based in Germany
- Network security consulting firms based in the Netherlands
- Network security consulting firms based in Spain
- Network security consulting firms based in Italy
- Network security consulting firms based in Mexico
- Network security consulting firms based in South Africa
Browse the directory
Browse: Companies home · Network security consulting firms in United States · All United States lists · All Network security consulting firms lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Network security consulting firms based in the United States
- Network security consulting firms based in the United Kingdom
- Network security consulting firms based in France
- Network security consulting firms based in Canada
- Network security consulting firms based in Brazil
- Network security consulting firms based in Australia