Crypto’s first quantum attack will look like an unexplained breach: Quantus founder
Quantum computing may first reveal itself through unexplained crypto wallet thefts, not a headline-grabbing Bitcoin heist. A powerful quantum computer could derive private keys from public keys onchain, moving funds without breaching wallets or exchanges, leaving little forensic trace. The biggest early blockchain target may not be Satoshi’s Bitcoin but higher-value keys like a stablecoin issuer’s minting key or exchange hot wallets, which could be stolen quietly and plausibly denied as ordinary key loss. Timeline estimates remain highly uncertain. Recent AI-assisted progress has reduced the qubit resources needed to break elliptic-curve cryptography, pushing some migration plans earlier. Google moved its post-quantum transition target to 2029. Experts disagree widely: some see a meaningful chance by 2028, others expect the early 2030s, while some say timing is unknowable. Despite this, blockchains and other systems are already beginning post-quantum migration.
