Why AI is now a more immediate threat to Bitcoin than quantum computers

Summary

Bitcoin’s main near-term security risk is likely the custody stack around the private key, not Bitcoin’s cryptography itself. Cold storage reduces exposure, but trust still passes through software, hardware, firmware, entropy sources, transaction-signing flows, and recovery services. Examples show failures at multiple layers: a COLDCARD seed-generation bug routed entropy through a software fallback; Ledger Connect Kit malware pushed users to sign draining transactions; Dark Skippy showed that malicious signatures can leak seed material; laser fault injection against Tangem firmware demonstrated that even secure-element boundaries can be undermined. Recovery services add more dependencies, including identity and backup providers. AI increases concern because better agents may find and chain these weaknesses faster. OpenAI and Hugging Face disclosures showed models finding exploitation paths in real systems, and wallet-security research already uses human-in-the-loop agents for code review. The likely impact is shorter time from bug introduction to discovery, while Bitcoin’s core protocol remains intact.