Cybersecurity Agencies in California

16 cybersecurity agencies are listed in California, United States. 13 have been assessed on the Agency List Score as of October 2026; the highest-ranked is Netswitch at 92.6.

Ranked · 6 of 13 assessed

Ordered by Agency List Score
#1 of 13 assessed
Netswitch
93

Integrating AI and Blockchain for Cyber Resilience

BI DashboardsData Science and Modeling
#2 of 13 assessed
JDS Security
73

Licensed security services with surveillance and executive protection

Compliance and GovernanceIdentity and Access ManagementIncident Response Planning
#3 of 13 assessed
Cyber Defense Group
73

Risk assessment, compliance, incident response, and AI governance for enterprises

Incident Response PlanningSecurity Audits and Risk Assessment
#4 of 13 assessed
Cybersecurity & IT Resilience Experts
73

Analytics and PPC services for inbound lead capture and search visibility

Data Science and Modeling
#5 of 13 assessed
Taranet
73

Cybersecurity risk management for commercial and government sectors

Penetration Testing
#6 of 13 assessed
California Commercial Security
67

Web and PPC services for inbound lead capture and search visibility

Data Hygiene and SyncHubSpot ImplementationLead Routing and Enrichment

Also in California · 10 not ranked here

3 have not yet been assessed on the Agency List Score. Alphabetical.

About this ranking

What this page ranks

This page ranks 6 of the 13 assessed cybersecurity agencies in California, United States — the ones carrying a published score — out of 16 listed.

The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.

Cohorts and awards

Agencies are compared within a cohort — here, Cybersecurity in California, United States. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 13, so the strongest award available here is top 25%.

The 3 cybersecurity agencies not yet assessed are listed on this page but not ranked.

A further 7 were assessed and no published evidence of their work was found, so no score is shown for them.

Read the full methodology

Paid placement

Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.

Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.

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Questions

How many cybersecurity agencies are in California, United States?
16 are listed on Agency List in California, United States. 13 of them have been assessed on the Agency List Score as of October 2026, and 6 of those carry a published score.
Which cybersecurity agency in California, United States is ranked highest?
Netswitch, with an Agency List Score of 92.6, ranks #1 of 13 assessed agencies in Cybersecurity in California, United States.
Why are 10 cybersecurity agencies listed here but not ranked?
3 of the 16 listed have not yet been assessed on the Agency List Score. A further 7 were assessed and no published evidence of their work was found, so no score is shown for them. They each have a profile and are listed below the ranking, alphabetically, rather than being hidden or mixed into it.
How is the ranking determined?
By Agency List Score, within the Cybersecurity in California, United States cohort of 13 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.