S21sec

S21sec is a subsidiary testing company founded in 2000, headquartered in Orcoyen, Spain, with 201-500 people. It offers Red teaming. It publishes no rate card. Data checked on September 3, 2026.

Profile checkedSeptember 3, 202610 sourceswww.s21sec.com

Best suited for

Nearshore for the EU
S21sec delivers from Spain, Portugal.
At least one delivery location in the EU or the EEA, or in Ukraine, Georgia, Serbia or Moldova.

Facts

Comparable facts about S21sec. Every field is shown, including the ones the company has not published.
Headquarters	Orcoyen, Spain
Delivery locations	Spain, Portugal
Team size	201-500 people
Founded	2000
Ownership	Subsidiary
Services	Red teaming
Industries	Media
Frameworks	Not published
Engagement models	Not published
Client stages	Not published
Certificates	No certificate confirmed by a register entry
Signs a BAA / GDPR DPA	Not confirmed / Not confirmed
Published rates	Not published
Minimum project	Not published
Onboarding	Not published
Crowd tester pool	Not published
Device lab	Not published

Reviews on external platforms

No external review profile found.

This catalog collects no reviews of its own. Review counts and scores are aggregates from external platforms, shown with the date they were read.

Named clients

No client named in a public source.

Rankings this company appears in

Industry: Media position 17 of 38
Type of testing: Red teaming position 11 of 24
Delivery location: Spain position 7 of 10
Delivery location: Portugal position 8 of 10
Delivery location: Europe position 49 of 72
Delivery proximity: nearshore for a buyer in the EU position 49 of 57

Sources

S21sec success story: Invest in NavarraChecked on September 3, 2026
Thales closes acquisition of leading cybersecurity players S21sec and Excellium: Bright Pixel CapitalChecked on September 3, 2026
S21sec inaugura su nuevo SOC en Madrid: Computing.esChecked on September 3, 2026
S21sec califica sus servicios en estándares de ciberseguridad Leet Security y Pinakes: La Ecuación DigitalChecked on September 3, 2026
Sucursales Grupo S21 Sec Gestión (Madrid): eInformaChecked on September 3, 2026
Thales S21sec Portugal: registered address lookup, eInforma PortugalChecked on September 3, 2026
S21sec: directorio de empresas de ciberseguridad en Navarra, Ciberseguridad.comChecked on September 3, 2026
LEET Security: registro público de servicios calificadosChecked on September 3, 2026. Consulted to verify the Leet Security / Pinakes rating reported in press coverage. S21sec does not appear in this public registry, so the rating could not be confirmed against the scheme operator itself.
S21sec: LinkedIn company pageChecked on September 3, 2026
S21sec: Crunchbase organization profileChecked on September 3, 2026

Every field on this profile records which of these sources it came from. The profile was last rebuilt from them on September 3, 2026. A field no source confirms is left empty rather than estimated.

Published by QA Rating

Every fact about a company comes from a listed source. A field without a source stays empty. A certificate counts as confirmed only when a registry, certificate or auditor report backs it; a certificate the company only claims about itself is published separately, under that label. Vendors can request a correction at hello@qa-rating.com. A correction is applied when it comes with a public source. Last checked on September 3, 2026.

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S21sec

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