Crypto is the canary in the coal mine for the quantum computing threat, experts say
Experts warn that the decentralized nature of cryptocurrencies makes them the most likely first target for quantum-enabled cyberattacks as quantum computing capabilities advance. While post-quantum cryptographic solutions exist, the primary challenge for networks like Bitcoin is achieving the necessary community consensus to implement these security upgrades before the projected 2029 'Q-Day' deadline.
Why it matters
The potential for quantum computers to break current encryption threatens the security of global financial systems, highlighting a critical governance gap between centralized institutions and decentralized networks.
"Cryptocurrencies are the canary in the coal mine," Eddy Zervigon, CEO of Quantum Xchange, said in an interview with CoinDesk. Zervigon's firm builds infrastructure to shield networks, including financial ones, from quantum-enabled attacks, and he's blunt about where the first casualty is likely to show up.
"That's the first place of attack because of the decentralized nature," Zervigon said. "Once you see it happening there, then you know that someone somewhere has a cryptographically relevant quantum computer."
A cryptographically relevant quantum computer, capable of breaking the elliptic-curve cryptography underpinning the Bitcoin blockchain's signatures, along with the encryption securing bank rails, doesn't exist yet. The consensus estimate for when it will is compressing, not stretching.
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