In 2024, the development of quantum computers challenges traditional cryptography, which is based on complex mathematical problems. Quantum computers can solve these problems significantly faster compared to traditional computers, potentially compromising data security. However, at the same time, quantum computers also offer new opportunities for cybersecurity. For example, quantum cryptography provides ways to encrypt information based on the principles of quantum mechanics, making them immune to quantum computer attacks. In the future, quantum computers and quantum cryptography may change how cybersecurity and data protection are implemented online.