General Data Protection Regulation · Europe
The GDPR is the European Union's comprehensive data protection regulation that applies to any organisation processing personal data of EU residents. Article 32 requires organisations to implement appropriate technical and organisational measures to ensure a level of security appropriate to the risk, including a process for regularly testing, assessing, and evaluating the effectiveness of security measures.
Penetration testing directly supports GDPR compliance by providing evidence of regular security testing and assessment. Article 25 (data protection by design and default) further supports the need for security testing during development and deployment of systems processing personal data. In the event of a data breach, organisations that can demonstrate regular penetration testing and remediation are in a stronger position during regulatory investigations.
The GDPR's potential fines of up to 4% of global annual turnover make proactive security testing a cost-effective risk management measure. Penetration testing for GDPR compliance should cover all systems processing EU personal data, with particular attention to web applications, APIs, and data storage systems.
UK offensive security consultancy delivering CREST-accredited penetration testing, adversary simulation and CBEST, TIBER-EU and TBEST threat-led testing, mainly for financial services and other large organisations.
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CREST and CHECK-accredited UK penetration testing and managed security provider formed in 2026 from Pentest People, Bulletproof, and Target Defense, with CREST STAR/TLPT-FS capability and the GuardNest vulnerability management platform.
Elite UK offensive security consultancy specialising in CBEST/STAR/TIBER red teaming, advanced adversary simulation, and CREST-accredited penetration testing for FTSE 100 clients.
Full-service London-based cybersecurity consultancy with CREST, CHECK, and NCSC accreditations delivering offensive testing, managed detection, and strategic advisory services.
Global managed security provider with the elite SpiderLabs penetration testing team and deep PCI DSS compliance expertise.
Manchester-based independent cybersecurity consultancy with over 20 years of experience delivering CREST and CHECK-accredited penetration testing, red teaming, and compliance certification services.
CREST and CHECK-accredited UK penetration testing consultancy with CBEST approval, specialising in infrastructure, application, and simulated attack assessments across the public and private sectors.
CHECK and CREST-accredited Birmingham-based cyber security consultancy with over 15 years of experience delivering penetration testing, red teaming, and OT security assessments for government and private sector clients.
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World-renowned cybersecurity firm now part of Google Cloud, delivering threat intelligence-led penetration testing and red teaming informed by front-line incident response experience.
Article 32(1)(d) requires 'a process for regularly testing, assessing and evaluating the effectiveness of technical and organisational measures.' While not naming pen testing specifically, it is widely accepted as the primary means of meeting this requirement.
Testing should focus on systems processing EU personal data, including web applications, databases, APIs, file storage, and any systems involved in data collection, processing, or transfer.
Demonstrating a programme of regular penetration testing and remediation shows the ICO and other data protection authorities that you took reasonable steps to protect personal data, which can reduce fines.