In the rapidly evolving landscape of online banking, where technology has transformed the way customers manage their finances, the book "Cyber security Threats in Online Banking" delves into the multifaceted aspects of this digital revolution. While the integration of internet services in the financial sector has undeniably been a blessing, granting customers unparalleled convenience, it has also cast a shadow in the form of cyber security vulnerabilities, as highlighted in recent years. The book begins by shedding light on the remarkable growth of internet users in India, a testament to the widespread adoption of digital banking. As the book delves deeper, it underscores the inadequacies of the existing legislative framework, primarily the Information Technology Act of 2000, which was not designed to address the evolving cyber threats associated with digital banking.