How many penetration testing agencies are in United States?

99 are listed on Agency List in United States. 4 of them have been assessed on the Agency List Score as of September 2026, and 0 of those carry a published score.

How is the ranking determined?

By Agency List Score, within the Penetration Testing in United States cohort of 4 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.

Top Penetration Testing Agencies in United States

Ranked · 0 of 4 assessed

No agency on this page has been assessed on the Agency List Score yet, so there is nothing to rank. Every agency listed below has a profile.

Also in United States · 99 not ranked here

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

AIS NetworkView profile →AlcondtsView profile →AliascybersecurityView profile →All Covered IT SolutionsView profile →ArmolonView profile →AssuredView profile →Automated Office SolutionsView profile →BarbaricumView profile →Bishop FoxView profile →Bureau Veritas CybersecurityView profile →Canary TrapView profile →Centric ConsultingView profile →CharlesitView profile →ClearNetworkView profile →Computer Support For YouView profile →CorsicatechView profile →CP Cyber SecurityView profile →CruxsecurityView profile →Cyber AdvisorsView profile →CybersecopView profile →Cybersecurity SolutionsView profile →CybersecurityservicesView profile →CyberShield CSCView profile →CybershielditView profile →

About this ranking

What this page ranks

4 of the 99 penetration testing agencies listed in United States have been assessed, and none of them carries a published score, so this page ranks nothing.

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, Penetration 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 4, so no award can be issued here.

The 95 penetration testing agencies not yet assessed are listed on this page but not ranked.

A further 4 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 penetration testing agencies are in United States?: 99 are listed on Agency List in United States. 4 of them have been assessed on the Agency List Score as of September 2026, and 0 of those carry a published score.
Why are 99 penetration testing agencies listed here but not ranked?: 95 of the 99 listed have not yet been assessed on the Agency List Score. A further 4 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 Penetration Testing in United States cohort of 4 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.