APRA CPG 234 — Information Security Prudential Practice Guide

Why it Matters

APRA CPG 234 establishes clear expectations for information security governance and resilience within regulated Australian financial institutions.

Key benefits include:

• Strengthen information security management

Enable organizations to build robust information security frameworks that address evolving risks and regulatory demands.

• Enhance regulatory compliance

Support ongoing adherence to APRA standards while facilitating alignment with industry-recognized information security frameworks and expectations.

• Improve oversight of third-party risk

Guide institutions in managing risks associated with service providers, ensuring consistent security controls across outsourced arrangements.

• Promote proactive incident response

Enable timely detection, escalation, and resolution of security incidents to minimize disruption and financial loss.

• Increase audit and assurance readiness

Facilitate consistent documentation, assessment, and validation of security practices to streamline supervisory reviews and reduce compliance gaps.

How it Works

APRA CPG 234 structures its guidance around key information security domains, including governance, risk management, controls implementation, and ongoing assurance. The framework sets expectations for boards and senior management regarding security responsibilities, the establishment of an information security capability, and processes for continuous improvement. It emphasizes identification and management of security risks across assets, third parties, and service providers, while requiring regular review and testing of security controls.

In practice, organizations implement CPG 234 by developing and maintaining robust security policies, conducting regular risk assessments, and aligning security controls with regulatory requirements. Financial institutions map their security practices to CPG 234’s expectations, monitor performance through compliance assessments, and integrate findings into risk management and incident response processes. Ongoing review, staff training, and evidence collection support continuous improvement and facilitate audit readiness.

SmartSuite facilitates operationalization of APRA CPG 234 through features such as control libraries, centralized risk registers, and policy governance modules. Organizations use SmartSuite to document controls aligned with regulatory guidance, collect compliance evidence, track remediation tasks, and monitor security posture via reporting dashboards, streamlining adherence to regulatory information security standards.

Key Elements

• Information Security Governance Structure

Establishes organizational roles, responsibilities, and oversight mechanisms for managing information security risks and compliance.

• Risk Identification and Assessment Process

Describes systematic methods for detecting, quantifying, and prioritizing information security threats and vulnerabilities.

• Security Control Framework

Outlines categories of technical, physical, and administrative safeguards to prevent unauthorized access and data loss.

• Incident Response and Notification

Defines structured procedures for preparing for, managing, and reporting information security events and breaches.

• Third-Party Security Management

Specifies requirements for assessing and mitigating information security risks associated with external service providers.

• Ongoing Assurance and Review Activities

Organizes regular monitoring, testing, and evaluation processes to ensure effective and continually aligned security practices.

Framework Scope

APRA CPG 234 — Information Security Prudential Practice Guide is used by financial institutions, insurers, and superannuation entities regulated by APRA to manage information security across enterprise systems and critical data assets. Organizations typically reference this framework when addressing regulatory compliance, enhancing security controls, or supporting assurance programs for data protection and operational resilience.

Framework Objectives

APRA CPG 234 provides guidance for organizations to strengthen information security governance and manage cybersecurity risks effectively.

Strengthen information security governance and oversight across organizational processes

Enhance data protection through effective cybersecurity controls and risk management

Ensure compliance with APRA’s regulatory requirements and industry standards

Improve operational resilience against cybersecurity threats and disruptions

Support ongoing assurance and audit readiness through established security practices

Safeguard critical information assets from unauthorized access, loss, or misuse

Framework in Context

APRA CPG 234 complements APRA CPS 234 and is often mapped to ISO/IEC 27001 and the ASD Essential Eight to translate prudential guidance into controls. Australian financial institutions implement it for regulatory compliance, to align security governance with prudential expectations, and to guide operational security improvements and audit readiness.

Common Framework Mappings

Organizations map APRA CPG 234 to established international and national frameworks to align controls, streamline audits, demonstrate regulatory compliance, and implement consistent cybersecurity and privacy practices across programs.

Mapped frameworks include:

APRA CPS 234

ASD Essential Eight

CIS Critical Security Controls

ISO/IEC 27001

ISO/IEC 27002

ISO/IEC 27701

NIST Cybersecurity Framework

NIST SP 800-53