This book discusses the critical role of IT security within the banking sector, highlighting the need to protect physical and digital assets from the increasing threats of cyberattacks. With rapid ad-vancements in digital finance, the book emphasises the necessity for professionals to understand IT security's foundational principles, from managing risk to implementing secure infrastructures. It is designed specifically for the banking sector; this book provides an in-depth examina-tion of the essential elements of IT security and serves as a guide for professionals aiming to en-hance the security of their institutions. This book benefits IT professionals, bankers, and students pursuing certification in IT security, equipping them with practical knowledge of security controls, threat management, and regulatory compliance.