Skip to main content
PPenTesting.org

Find the right penetration testing company

Tell us what you need tested and why. We match you with UK and US firms on their listed services and accreditations, and show why each one fits.

What needs testing?
Why now?
When?
How big a job?
Accreditation you need
Where your company is

No name or email needed. You contact the firms yourself.

Buyer toolkit

All templates →
Scoping templateWrite down what to test so every firm quotes for the same job.Request for quoteAsk for prices you can compare line by line.Questions to askWho tests, how, and what changes the price.Report checklistJudge a sample report before you buy, and the final one after.

Most accredited UK firms

Ordered by the number of accreditations on their listing.

Claranet Cyber Security

Cyber security division of Claranet providing CREST-accredited penetration testing, application testing and managed security services.

CREST-accreditedNCSC CHECK
Mobile application testingSocial engineering testing

Pen Test Partners

UK consultancy offering CREST-accredited penetration testing across web, mobile, infrastructure and specialist areas such as maritime, automotive and aviation.

CREST-accreditedNCSC CHECK
Web application testingAPI security testingMobile application testingCloud configuration testing

Cyberfort Limited

UK cyber security group offering CREST-accredited penetration testing, incident response and secure hosting.

CREST-accreditedNCSC CHECK
Infrastructure & network testingWeb application testingMobile application testingCloud configuration testing

Cyberis Reply Ltd

UK consultancy (part of Reply) offering CREST-accredited penetration testing and financial-sector threat-led testing (STAR-FS).

CREST-accreditedNCSC CHECK

Dionach Ltd

UK consultancy offering CREST-accredited penetration testing, incident response and information security auditing.

CREST-accreditedNCSC CHECK
Infrastructure & network testingWeb application testingMobile application testingCloud configuration testing

MDSec Consulting Ltd

UK consultancy specialising in CREST-accredited penetration testing and financial-sector threat-led testing (CBEST, GBEST, TIBER-EU).

CREST-accreditedNCSC CHECK
Infrastructure & network testingWeb application testingMobile application testingCloud configuration testing

Browse by service

Infrastructure & network testing (37)Web application testing (39)API security testing (24)Mobile application testing (34)Cloud configuration testing (32)

Browse by country

United Kingdom (52)United States (5)

Browse by accreditation

CREST-accredited (51)NCSC CHECK (20)ISO 27001 (as declared on CREST) (34)Cyber Essentials Plus (as declared on CREST) (22)PCI QSA (as declared on CREST) (2)SOC 2 (as declared on CREST) (1)
Find the Right Penetration Testing Company