Independent review of information security
The organization's approach to managing information security and its implementation including people, processes and technologies should be reviewed independently at planned intervals, or when significant changes occur.
Purpose
To provide assurance that information security practices are effective and aligned with organizational needs.
Implementation Guidance
Conduct regular internal audits of information security
Engage external auditors for independent assessment
Review audit findings and implement corrective actions
Track audit issues to resolution
Ensure auditors have appropriate independence and competence
Note: ISMS Directory lists external audit firms that provide independent internal/external audits
Recommended Tools
Tempo Audits
Independent external auditing firm providing ISO 27001 certification audits and compliance assessments.
Mastermind Assurance
External audit and assurance services for ISO 27001 certification and independent security reviews.
ISMS Directory
Directory of ISO 27001 services including compliance platforms, internal auditors, and external auditors.
ISO 27001 Services from the Directory
These providers can help you implement A.5.35 and achieve ISO 27001 certification.

Advisera
Provider of ISO 27001 documentation, training, and consultancy services to help businesses achieve compliance.

Anecdotes
Enterprise agentic GRC platform with 230+ integrations and 40+ pre-mapped frameworks for Fortune 500 compliance programs.

Arrow Cyber Advisors
Arrow Cyber Advisors enables organizations to build measurable cybersecurity maturity and resilience. We specialize in governance, risk and compliance advisory, providing clear security direction, maturity benchmarking, and execution support tailored to regulated and high-risk environments.

Atoro
Atoro offers specialized ISO 27001 certification services for SaaS companies, simplifying compliance with expert tools.

AuditBoard
Enterprise connected risk platform trusted by over 50% of the Fortune 500 for audit, risk, and compliance management.

Bitsecura
*** Helping Businesses Achieve Compliance & Certification Success *** Bitsecura is a IT governance, risk, and compliance (GRC) firm specialising in helping organisations protect their critical assets, navigate complex regulatory landscapes, and build sustainable cybersecurity frameworks. With over 20 years of industry experience, we offer strategic guidance, bespoke solutions, and operational support that align seamlessly with your business objectives. Our commitment to practical innovation and long-term partnerships ensures that working with Bitsecura not only strengthens your current security posture, but also builds a lasting foundation for future resilience.
Related Controls
Other controls in Organizational Controls
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