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NotSoSecure

NotSoSecure Global Services Limited

United Kingdom

Penetration TestingOffensive SecurityApplication SecurityCloud Security
51-200 employeesServes Enterprise
Profile last updated: August 13, 2026

About

NotSoSecure is a cybersecurity company based in United Kingdom working in penetration testing, offensive security, application security +3 more.

NotSoSecure is Claranet's dedicated cybersecurity training division and global penetration testing practice. It provides web, mobile, infrastructure, cloud and red team penetration testing, continuous security testing, source code review, social engineering assessments, AI/ML and LLM security testing, and advisory consultancy. It also delivers hacking and defensive security training, including courses at Black Hat conferences, and offers managed detection and response and managed security services through the wider Claranet Cyber Security division. Its clients include large financial institutions, retailers and software businesses. The company publishes open source security tools and research, and reports findings with prioritised remediation guidance. It is founded in the UK and operates globally.

Location

United Kingdom

Employees

51-200

Legal name

NotSoSecure Global Services Limited

Focus areas

penetration testingred teamsecurity trainingethical hackingapplication securitycloud securityopen source

Languages

EN

Services & products

Security domains

Penetration TestingOffensive SecurityApplication SecurityCloud SecurityManaged SecurityDetection & Response

How they deliver

Professional ServicesConsultingManaged ServicesTraining

Products

UDP Hunter

Network scanner

Open source Python tool for UDP service scanning of IPv4 and IPv6 hosts, with support for 19 service probes and guidance on exploiting discovered services.

Android Application Analyzer

Mobile application analysis tool

Tool used to analyse the content of Android applications in local storage.

Customers

Enterprise

Industries served

FinanceRetailSoftware

Compliance & partners

Compliance frameworks

PCI DSS

Technology partners

Check Point

Credentials & affiliations

Certifications

CREST

Issued by: CREST

PCI QSA

Issued by: PCI Security Standards Council

PCI ASV

Issued by: PCI Security Standards Council

Cyber Essentials

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