This course begins with a clear introduction to quantum computing concepts, exploring qubits, superposition, entanglement, and the mechanisms that differentiate quantum from classical systems. Learners gain foundational knowledge that enables them to assess potential threats to existing cryptographic frameworks and understand the broader implications for data security. The course then examines practical risks, including the potential for breaking modern cryptography, vulnerabilities to blockchain systems, and other critical security threats posed by emerging quantum technologies. Through a dedicated case study, learners apply their knowledge to real-world scenarios, analyzing challenges and understanding the strategic consequences of quantum-enabled attacks. The material is designed to connect theory to actionable insight. Finally, the course guides learners through post-quantum cryptography (PQC) and the development of future-ready strategies. Key standards from NIST are covered, along with quantum key distribution (QKD) mechanisms. Learners are shown how to build a comprehensive quantum risk roadmap, enabling organizations and individuals to proactively safeguard sensitive data. By course completion, participants understand both the technical and strategic dimensions of quantum computing’s impact on cybersecurity.