The Australian Prudential Regulation Authority (APRA) has written to all Registrable Superannuation Entity (RSE) licensee board chairs, reinforcing expectations for information security and robust authentication controls following recent credential stuffing attacks that highlighted weaknesses across the superannuation industry. APRA reminded RSE licensees of their obligations under Prudential Standard CPS 234 Information Security and set out actions to assess and uplift authentication practices. These include completing a self-assessment of information security controls, ensuring multi-factor authentication (MFA) or equivalent protections for high-risk activities and privileged access, notifying APRA of any material control weaknesses or breaches, and identifying the Accountable Person(s) under the Financial Accountability Regime (FAR) responsible for CPS 234 compliance.