ISO 27001 Penetration Testing Providers
ISO/IEC 27001 Information Security Management · Global
ISO 27001 is the international standard for information security management systems (ISMS). It provides a systematic framework for managing sensitive company information and ensuring its confidentiality, integrity, and availability. Annex A control A.18.2.1 specifically requires independent review of information security, which includes penetration testing as a key validation activity.
Organisations seeking or maintaining ISO 27001 certification typically need annual penetration testing covering network infrastructure, web applications, and any systems processing sensitive data. The 2022 revision of the standard introduced new controls around threat intelligence and cloud security that further reinforce the need for regular security testing.
Penetration testing helps organisations demonstrate compliance with ISO 27001 by providing evidence of proactive security assessment and vulnerability management. Testing should cover the scope of the ISMS and be performed by qualified, independent testers.
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.
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.
NetSPI
Leading penetration testing firm with the Resolve platform for continuous attack surface management, trusted by nine of the top ten US banks.
Trustwave
Global managed security provider with the elite SpiderLabs penetration testing team and deep PCI DSS compliance expertise.
Bridewell
Fast-growing CREST and CHECK-accredited UK cybersecurity consultancy with deep expertise in critical national infrastructure sectors.
Pentest People
CREST and CHECK-accredited UK penetration testing firm with an innovative SecurePortal platform and transparent pricing for mid-market organizations.
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.
Bishop Fox
Premier US-based offensive security firm known for elite penetration testers, cutting-edge research, and the Cosmos continuous attack surface management platform.
Rapid7
Creators of Metasploit offering enterprise penetration testing integrated with their comprehensive vulnerability management and security operations platform.
Coalfire
Compliance-focused cybersecurity advisory firm and FedRAMP 3PAO specializing in penetration testing that meets stringent regulatory requirements.
WithSecure
Leading European cybersecurity firm offering penetration testing with deep expertise in EU regulatory compliance including GDPR, NIS 2, and TIBER-EU.
Claranet
CREST and CHECK-accredited European managed services provider delivering penetration testing with deep infrastructure and cloud hosting expertise.
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.
SEC Consult
Leading European cybersecurity consultancy from Vienna with a prolific vulnerability research program and deep expertise in IoT and embedded systems security.
CrowdStrike
Global cybersecurity leader leveraging world-class threat intelligence from the Falcon platform to deliver intelligence-led penetration testing and red teaming.
IOActive
Elite boutique security consultancy specializing in IoT, SCADA/ICS, embedded systems, and hardware security research with world-renowned researchers.
Secureworks
Dell Technologies-backed cybersecurity firm with elite Counter Threat Unit intelligence informing enterprise penetration testing and adversary simulation.
Rhino Security Labs
Cloud security penetration testing specialists known for the Pacu AWS exploitation framework and deep expertise across AWS, Azure, and GCP environments.
Offensive Security
Creators of OSCP, Kali Linux, and Exploit-DB, offering elite penetration testing services from the team that trains the world's ethical hackers.
Bugcrowd
Leading crowdsourced security platform offering managed bug bounty programs and crowd-powered penetration testing with hundreds of thousands of ethical hackers.
Aon Cyber Solutions
Cybersecurity consulting division of global insurance leader Aon, uniquely combining penetration testing with cyber risk quantification and insurance expertise.
BreachLock
Cloud-based Penetration Testing as a Service platform combining AI-driven automation with expert manual testing at accessible price points.
Cure53
Berlin-based specialists in web security, browser security, and cryptographic auditing, trusted by the world's leading VPN providers and privacy tools.
Cobalt
Pioneer of Pentest as a Service, delivering fast, platform-based penetration testing with a vetted global community of security researchers.
ISO 27001 FAQs
Does ISO 27001 require penetration testing?+
While not explicitly mandated, penetration testing is strongly recommended under Annex A controls A.8.8 (management of technical vulnerabilities) and A.18.2.1 (independent review of information security). Most certification auditors expect to see evidence of regular pen testing.
How often should pen testing be done for ISO 27001?+
Annual penetration testing is the standard expectation, with additional testing after significant changes to systems within the ISMS scope.
What scope should pen testing cover for ISO 27001?+
Testing should cover systems and networks within the ISMS scope, including infrastructure, applications, and any systems that process, store, or transmit information covered by the ISMS.