The Road to Post-Quantum Readiness Part 1 of 2: Understanding the Risk

Part 1 of a two-part NVISO series explains the quantum threat to current cryptography and the need for post-quantum cryptography (PQC). It covers why quantum algorithms (Shor, Grover) undermine existing asymmetric and symmetric schemes, the 'harvest now, decrypt later' risk, NIST's finalized PQC standards (ML-KEM, ML-DSA, SLH-DSA), government timelines, and the rapid adoption of hybrid PQC by browsers and cloud providers — concluding that organizations must start migrating and building cryptographic agility now.