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Closed Door Security Ltd

United Kingdom · Small (11–50)

Listed from public sources · unclaimed. We compiled this profile from public records; Closed Door Security Ltd has not claimed or edited it. We have not yet published an independent review, so this listing carries no rating.

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UK-based cyber security firm (with UAE and US offices) offering CREST-accredited penetration testing.

Accreditations

Services

Infrastructure & network testingWeb application testing

Sources

Last verified 2026-07-19. This listing was compiled from:

PPenTesting.org

The independent directory of penetration testing companies. Compare vetted providers by accreditation, service, and size — with the evidence linked.

PenTesting.org is an independent editorial directory. We are not an accreditation body or association and are not affiliated with CREST, the NCSC, OWASP, PCI SSC, or ISO. Accreditations are reported from public sources, with the evidence linked on each listing.

© 2026 PenTesting.org · An independent editorial directory · Not financial or security advice.