With the increasing power of computing, cybersecurity faces mounting threats, making digital systems more vulnerable to attacks. While modern cryptography used to be compelling, it now shows vulnerabilities against rapidly growing computational capabilities. Therefore, robust security solutions have become urgent in this precarious landscape. Advancing Cyber Security Through Quantum Cryptography is a book that can guide us through the turbulent waters of cybersecurity and quantum cryptography. It offers a panoramic view of current affairs, insightful analyses, illuminating case studies, and meticulous exploration of challenges and opportunities. Through this book, readers can gain knowledge and navigate this complex terrain. It delves into critical areas where quantum cryptography can fortify cybersecurity defenses, such as secure communications, e-commerce, and quantum internet.