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Harvest-Now-Decrypt-Later: Quantum Crypto Risk Timeline

Interactive 3D simulator of Mosca's theorem for post-quantum migration risk: watch intercepted encrypted traffic accumulate in an adversary's vault and see which of it becomes exposed the moment a cryptographically-relevant quantum computer arrives.

Cybersecurity3DAdvanced60 FPS

Quantum computers don't need to exist today to threaten today's encrypted traffic. This simulator dramatizes the "harvest now, decrypt later" attack behind post-quantum migration planning: encrypted data packets stream into an adversary's storage vault continuously, each carrying a harvest year and a confidentiality deadline. Drag the three timeline sliders — data shelf-life, migration time, and years until a cryptographically-relevant quantum computer ("Q-day") — and watch Mosca's inequality play out live: when the simulated clock hits Q-day, every packet that is both still RSA/ECC-protected and still within its secrecy window turns red and counts as compromised, while anything migrated to post-quantum cryptography beforehand stays safe. It's a working model of the exact planning question every organization migrating to ML-KEM/ML-DSA has to answer: does migration finish before the exposure window closes?

⚙ Under the hood

Simulate the 'harvest now, decrypt later' quantum threat: watch intercepted RSA/ECC traffic accumulate in an adversary's vault and see Mosca's theorem decide, live, which of it is exposed the instant a cryptographically-relevant quantum computer arrives.

quantum computingpost-quantum cryptographycybersecurityRSArisk modelingencryption

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install