How many people work at A3Sec?

About 123, down 3% over the last 30 days.

Who are A3Sec's competitors?

Hadrian, ZeroFox, and Praetorian are among the closest in Attack Surface. The full competitive set, with overlap scoring, is in the platform.

A3Sec

Attack SurfaceMadrid, Spainfounded 2012private

A3Sec is a cybersecurity company specializing in Attack Surface, founded in 2012 and headquartered in Madrid, Spain. It employs about 123 people and is privately held.

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updated Aug 22, 2026

The record

What A3Sec did, dated.

Mar 2026PartnershipAndersen Consulting partners with Spanish groups A3Sec and Ambit Iberia

selected events only — the full dated record (2 events since Mar 2026) lives in the platform

In the platform

The other 440 data points.

Funding historyevery round, every lead investor
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

Similar in Attack Surface

FAQ

Common questions about A3Sec.

How many people work at A3Sec?: About 123, down 3% over the last 30 days.
Who are A3Sec's competitors?: Hadrian, ZeroFox, and Praetorian are among the closest in Attack Surface. The full competitive set, with overlap scoring, is in the platform.