Silent Collapse and Post‑Quantum Defense

Quantum threat to Bitcoin: Harvest now, decrypt later

Quantum computers could quietly break Bitcoin, and a former hacker says the countdown has already begun.

David Carvalho, a one‑time teenage spam hacker turned CEO of cybersecurity firm Naoris Protocol, warns that the blockchain’s cryptographic defenses may not withstand the coming wave of quantum computing and AI‑driven breakthroughs. 

At the center of his warning is a tactic known as “harvest now, decrypt later,” where attackers…