Encryption is clearly threatened by quantum computing, and post-quantum crypto means seamlessly integrating new cryptography into hardware and software. Quantum computing has a possible downside that could endanger our ability to secure data. In 1994, Peter Shor created a quantum computer-based algorithm for factoring huge numbers that may be used to decrypt data.
Today’s RSA encryption relies on the difficulties that a traditional computer has with such factorization. Nation-states and malicious actors began gathering data packets with Shor’s technique in mind, dreaming of a time when they could decrypt those packets with a fault-tolerant quantum computer.