GDPR Penetration Testing Providers
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.
Aardwolf Security
Boutique UK penetration testing consultancy in Milton Keynes specialising in manual, expert-led security assessments across web applications, APIs, cloud, and mobile platforms.
Aon Cyber Solutions
Cybersecurity consulting division of global insurance leader Aon, uniquely combining penetration testing with cyber risk quantification and insurance expertise.
Aristi
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.
Blaze Information Security
CREST-accredited boutique pen testing firm with offices across Europe and Brazil, serving 200+ organisations in 25 countries.
BreachLock
Cloud-based Penetration Testing as a Service platform combining AI-driven automation with expert manual testing at accessible price points.
Bridewell
Fast-growing CREST and CHECK-accredited UK cybersecurity consultancy with deep expertise in critical national infrastructure sectors.
Bugcrowd
Leading crowdsourced security platform offering managed bug bounty programs and crowd-powered penetration testing with hundreds of thousands of ethical hackers.
Bulletproof
CREST-accredited UK cybersecurity and compliance provider offering penetration testing, managed security services, and regulatory consultancy to over 2,000 customers from its Stevenage headquarters.
Claranet
CREST and CHECK-accredited European managed services provider delivering penetration testing with deep infrastructure and cloud hosting expertise.
Cobalt
Pioneer of Pentest as a Service, delivering fast, platform-based penetration testing with a vetted global community of security researchers.
CovertSwarm
Subscription-based offensive cybersecurity firm delivering continuous cyber attack services with CREST STAR and CBEST accreditations from its London headquarters.
Cure53
Berlin-based specialists in web security, browser security, and cryptographic auditing, trusted by the world's leading VPN providers and privacy tools.
Cyberis
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.
CyberLab
Cardiff-based CREST and CHECK-accredited cyber security company delivering penetration testing, red teaming, and OT security assessments as part of the Chess Group.
Cyphere
CREST-accredited Manchester-based cyber security firm delivering penetration testing, managed security services, and compliance consultancy across the UK, Europe, and the USA.
Dionach
Global enterprise cybersecurity consultancy founded in 1999 in Oxford, holding rare CREST STAR-FS accreditation and delivering penetration testing, red and purple teaming, and PCI QSA services across five international offices.
DTS Solution
Dubai-based cybersecurity firm providing pen testing and security consulting across the GCC with expertise in critical infrastructure.
Equilibrium Security
CREST-accredited Birmingham-based cyber security consultancy delivering penetration testing, social engineering assessments, and Cyber Essentials certification for public and private sector clients.
Evalian
CREST-accredited UK cyber security and data protection consultancy offering penetration testing, ISO consultancy, and managed SOC services from offices across the UK and Ireland.
HackerOne
World's largest ethical hacker platform with over one million researchers, offering bug bounties and structured penetration testing to the US DoD and Fortune 500.
Integrity360
CREST-accredited pan-European cybersecurity services provider delivering penetration testing and managed security from Dublin with a strong UK and Ireland presence.
IT Governance
Established Ely-based compliance and cybersecurity consultancy offering CREST-approved penetration testing as part of a comprehensive governance, risk management, and compliance portfolio.
JUMPSEC
Full-service London-based cybersecurity consultancy with CREST, CHECK, and NCSC accreditations delivering offensive testing, managed detection, and strategic advisory services.
Komodo Consulting
Tel Aviv-based offensive security consultancy leveraging Israel's deep cybersecurity talent for pen testing, red teaming, and threat intelligence.
LRQA
The only organisation worldwide with a full suite of CREST accreditations. 250+ cybersecurity specialists operating in 55+ countries across pen testing, red teaming, and incident response.
Mandiant
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.
MDSec
Elite UK offensive security consultancy specialising in CBEST/STAR/TIBER red teaming, advanced adversary simulation, and CREST-accredited penetration testing for FTSE 100 clients.
NCC Group
Global cybersecurity consultancy with CREST, CHECK, and CBEST accreditation, renowned for deep technical research and comprehensive penetration testing services.
Nettitude
CREST, CHECK, and CBEST accredited UK consultancy within Lloyd's Register, delivering premium penetration testing for government and critical infrastructure.
OnSecurity
CREST-accredited, platform-driven penetration testing vendor in Bristol offering AI-augmented testing with rapid self-service booking for over 400 global customers.
Pen Test Partners
The UK's largest independent security testing firm, renowned for IoT/OT research, CBEST red teaming, and CHECK/CREST-accredited penetration testing across all sectors.
Penetration Testing ME
Dubai-based CREST and ISO certified pen testing specialist serving the GCC region with full VAPT services.
Pentest People
CREST and CHECK-accredited UK penetration testing firm with an innovative SecurePortal platform and transparent pricing for mid-market organizations.
PwC Cyber Security
Global Big Four professional services firm delivering CREST, CHECK, and CBEST-accredited penetration testing and red teaming services from London, serving the UK's largest enterprises and regulated organisations.
Rapid7
Creators of Metasploit offering enterprise penetration testing integrated with their comprehensive vulnerability management and security operations platform.
Redscan (A Kroll Business)
London-based cybersecurity provider, now part of Kroll, delivering CREST-accredited penetration testing, managed detection and response, and incident response with a 550-strong cyber team.
RedSecLabs
CREST-certified and PCI QSA penetration testing consultancy in London, delivering offensive security and compliance services across 25+ countries with research-driven expertise.
Salus Cyber
Award-winning Cheltenham-based cybersecurity consultancy with NCSC CHECK Green Light status and CREST approval, specialising in defence, government, and critical national infrastructure security.
SEC Consult
Leading European cybersecurity consultancy from Vienna with a prolific vulnerability research program and deep expertise in IoT and embedded systems security.
Secarma
Manchester-based independent cybersecurity consultancy with over 20 years of experience delivering CREST and CHECK-accredited penetration testing, red teaming, and compliance certification services.
SECFORCE
Leading UK offensive security consultancy based in Canary Wharf, delivering CREST-accredited penetration testing and adversary simulation to organisations with the most demanding security requirements.
Secureworks
Dell Technologies-backed cybersecurity firm with elite Counter Threat Unit intelligence informing enterprise penetration testing and adversary simulation.
Securing (SecuRing)
Poland's longest-running independent pen testing firm with 50+ consultants. Specialises in application security, cloud testing, and red teaming.
Sencode
CREST-accredited North East England penetration testing specialist founded in 2019, offering accessible and transparent security testing with free retests and a strong focus on social engineering.
SensePost (Orange Cyberdefense)
Elite ethical hacking team within Orange Cyberdefense with 20+ year track record. Known for building industry-standard security tools and groundbreaking research.
Shielder
Independent Italian offensive security firm specialising in web, mobile, network, and embedded security assessments with a strong research focus.
Stripe OLT
Award-winning CREST-certified managed cyber security and IT support provider with offices in Bristol, London, and Manchester, specialising in penetration testing and Microsoft security technologies.
Swascan
Italian cloud-based security testing firm offering black, white, and grey box pen testing with strong European compliance expertise.
ThreatSpike Red
London-based cybersecurity firm offering unlimited, fixed-price penetration testing and red teaming services with ISO 27001 certification and a unique subscription model.
Trustwave
Global managed security provider with the elite SpiderLabs penetration testing team and deep PCI DSS compliance expertise.
WithSecure
Leading European cybersecurity firm offering penetration testing with deep expertise in EU regulatory compliance including GDPR, NIS 2, and TIBER-EU.
GDPR FAQs
Does GDPR require penetration testing?+
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.
What data should pen testing focus on for GDPR?+
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.
How does pen testing help after a GDPR breach?+
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.