efforts to protect the data privacy of our 10.14 million customers from unauthorised access and use. Our efforts include robust initiatives identified in our cybersecurity operating model and compliance with regulations such as the Personal Data Protection Act (PDPA) and industry standards. Securing Our Data and Network Infrastructure MANAGEMENT APPROACH SUSTAINABILITY DISCLOSURES ON MATERIAL MATTERS SUSTAINABILITY STATEMENT Sec 3 101 A cyber drill was conducted on 1 August 2023 involving 120 participants from TNB Power Generation, Grid, Distribution Network, Grid System Operator, Single Buyer, Security Services Department, ICT, Risk Management Department and Group Corporate Communication to enhance our crisis preparedness for and response to cybersecurity intrusion 1 Enhancement of cybersecurity risk assessment requirements for IT and OT systems 4 Annual assessment of TNB key point installations for cybersecurity resiliencyby Jawatankuasa Pemeriksaan Keselamatan Sasaran Penting, led by the Chief Government Security Officer of Malaysia 2 Collaboration with TNB business entities for proper classification of data into its rightful levels based on criticality and sensitivity 5 Enriching our cybersecurity situational awareness and knowledge of threats through up-to-date threat intelligence 3 Publication of 22 Discover ICT newsletters in 2023 as well as onsite and virtual engagements to educate employees on cybersecurity risks and mitigations 6 Our cybersecurity operating model includes robust initiatives to heighten our vigilance and enhance our cybersecurity management. The following initiatives, among others, are testament to our commitment to placing a high priority on cybersecurity: No Metric Bursa Ind. Unit 2021 2022 2023 Targets Customer Experience and Satisfaction 1 Number of substantiated complaints concerning breaches of customer privacy and loss of customer data C8 (a) Number - - 0 Zero complaints Reinforcing best practices OUR PERFORMANCE SUSTAINABILITY DISCLOSURES ON MATERIAL MATTERS TENAGA NASIONAL