Q-Day: When Quantum Computers Break Today's Encryption | Tech Studio #11

One day, a quantum computer could open the locks that protect your bank, your messages and Bitcoin. Experts call it Q-Day. A bomb squad walks through it wire by wire: what a qubit is, why prime numbers guard the internet, how fast the qubit estimates are falling, harvest now / decrypt later, Bitcoin's exposed coins, and the fix that is probably already on your phone. 0:00 The day every lock opens 0:24 What a quantum computer actually is (spinning coins, a cat, a fridge) 1:21 Meet the bomb squad 1:32 Wire 1: The lock (prime numbers and Shor's back door) 2:08 Wire 2: How big must the machine be? 2:47 Wire 3: How fast quantum is moving 3:28 Wire 4: Harvest now, decrypt later (and Bitcoin) 4:11 Wire 5: The fix (it may already be on your phone) 4:54 The good side: simulating nature 5:18 Who finishes first? Sources: Global Risk Institute, Quantum Threat Timeline Report (28-49% within 10 years, 51-70% within 15); Gidney & Ekera (2019, ~20 million qubits) and Gidney (2025, under 1 million qubits, under a week) on RSA-2048; Google Quantum AI et al. (Mar 30, 2026) on breaking secp256k1 with fewer than 500,000 physical qubits; Google Willow (Nature, Dec 2024, below-threshold error correction) and Quantum Echoes (Nature, Oct 22, 2025, ~13,000x); IBM and UChicago (Jul 30, 2026) and QuEra (Nature, Jan 2026) on logical qubits; Shor (1994); Project Eleven and CoinDesk on ~6.9 million BTC with exposed public keys; BIP-360 (draft, Feb 2026); NIST FIPS 203/204/205 (Aug 2024) and NIST IR 8547 (2035 target); Google's 2029 PQC deadline (Mar 2026); Signal PQXDH (2023), Apple iMessage PQ3 (2024), Chrome hybrid ML-KEM (2024); Richard Feynman, "Simulating Physics with Computers" (1981 talk, published 1982). The bomb squad is fiction. Tech Studio: how the engines that move the world actually work. #QuantumComputing #Cybersecurity #QDay