The ability of the immensely powerful quantum computers can break prevailing methods of encryption almost instantaneously. Once quantum computers become a reality, something that could conceivably happen in the next decade or two, all of the data protected by encrypted systems on the internet will become decrypted and unprotected, accessible to all individuals, organizations or nation-states. Senator Jack Reed (D-RI) is concerned that the Trump Administration has dropped the ball in getting ready for the complex threat of quantum computing. Deploying new algorithms is a policy challenge in and of itself, certainly, Congress needs to look at it sooner rather than later.”]
Source: https://www.csoonline.com/article/3488857/the-race-for-quantum-proof-cryptography.html