Quantum Computing Threat Spurs Push for Post‑Quantum Encryption

Security researchers warn that the advent of sufficiently powerful quantum computers could render current public‑key encryption obsolete. The so‑called “Q‑Day”, when a quantum machine can factor large numbers and break RSA‑based schemes, is described as a potential catastrophe for online banking, email, and classified communications. Professor Sushmita Ruj of the University of New South Wales warned, “En este momento, el cifrado protege esos datos… Pero ¿y si después aparece un ordenador que lo descifra todo? Sería una auténtica catástrofe.” The risk stems from Shor’s algorithm, first proposed in 1994, which can efficiently factor large integers.

In response, experts advocate the adoption of post‑quantum cryptography, with proposals that VPN providers make it a core feature. Such algorithms are designed to resist quantum attacks and are being evaluated for integration into existing security infrastructures worldwide.