Purpose
To reduce opportunities for unauthorized or unintentional modification or misuse of the organization's assets.
Implementation Guidance
Identify conflicting duties that should not be performed by the same person
Implement technical controls to enforce segregation where possible
Document exceptions and implement compensating controls
Review user access rights regularly to ensure segregation is maintained
Consider separation between development, testing, and production environments
Recommended Tools
Google Workspace
Complete suite including email, calendar, and SSO capabilities. Ideal for startups already using Gmail.
Microsoft 365
Enterprise productivity suite with strong security features and Azure AD integration.
Okta
Enterprise identity and access management platform providing SSO, MFA, and lifecycle management for secure authentication.
JumpCloud
ISO 27001 Services from the Directory
These providers can help you implement A.5.3 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.
Related Controls
Other controls in Organizational Controls


