Quantum computing represents a paradigm shift in computational capabilities, with the potential to solve complex problems far beyond the reach of classical computers. While this technology promises breakthroughs in various fields, it poses significant challenges to cryptography and cybersecurity. This article explores how quantum computing impacts existing security measures and how organizations can prepare for the quantum future. Quantum Computing and Its Potential Quantum computers leverage quantum bits (qubits), which can represent both 0 and 1 simultaneously through superposition. Combined with entanglement and quantum parallelism, this enables quantum computers to perform certain computations exponentially faster than classical machines. While still in its developmental stages, significant advancements by tech giants and research institutions indicate that practical quantum computing is becoming increasingly feasible. Threats to Current Cryptographic Systems Modern cybersecurity r...