Security Testing Agencies in United States

25 security testing agencies are listed in United States. 2 have been assessed on the Agency List Score as of September 2026; the highest-ranked is Kendrick Labs at 65.9.

Ranked · 2 assessed

Ordered by Agency List Score
#1 of 2 assessed
Kendrick Labs
66
Verified

Protein analysis for pharma, academia, and industry

Accessibility TestingAutomated TestingManual Functional Testing
#2 of 2 assessed
Tabdelta Solution
53
Verified

Custom AI software development and automation for enterprise and mid-sized organizations

Accessibility RemediationAccessibility TestingAndroid Development

Also in United States · 23 not yet assessed

Listed agencies queued for assessment. Alphabetical.

About this ranking

What this page ranks

This page ranks the 2 security testing agencies in United States that have been assessed on the Agency List Score, out of 25 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, Security Testing in 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 2, so no award can be issued here.

The 23 security testing agencies not yet assessed are listed on this page but not ranked.

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 security testing agencies are in United States?
25 are listed on Agency List in United States. 2 of them have been assessed on the Agency List Score as of September 2026.
Which security testing agency in United States is ranked highest?
Kendrick Labs, with an Agency List Score of 65.9, ranks #1 of 2 assessed agencies in Security Testing in United States.
Why are 23 security testing agencies listed here but not ranked?
23 of the 25 listed have not yet been assessed on the Agency List Score. 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 Security Testing in United States cohort of 2 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.