CISO vs. Information Security Officer — what's the difference?
While a CISO operates at the strategic level, the Information Security Officer (ISO) is responsible for the operational implementation of information security measures. The ISO translates strategy into day-to-day security management: maintaining the ISMS, coordinating security measures, training employees, and managing the security risk register.
Tasks of the external ISO
- ISMS maintenance — keeping your information security management system current
- Risk register management — tracking and updating information security risks
- Policy and guideline maintenance — keeping security documents current
- Security awareness — coordinating and conducting employee training
- Supplier security — maintaining vendor security assessments
- Internal audits — planning and conducting internal ISMS audits
- Incident coordination — supporting the incident response process
When an external ISO is the right choice
The external ISO is ideal when you have an information security strategy in place (or an external CISO) but need someone to ensure the day-to-day execution — without the overhead of a full-time security staff member.