# Ledger CTO Says AI Has Not Shown It Can Break Bitcoin’s ECDSA By Simon Yoon Canonical URL: https://www.tokenpost.com/news/technology/29167 Published: 2026-10-09T17:14:16.000Z Updated: 2026-10-09T17:14:16.000Z Section: Technology > Charles Guillemet said mathematical advances do not demonstrate an imminent attack, while researchers urged measured preparation for possible cryptographic risks. Ledger CTO Charles Guillemet said artificial intelligence has not demonstrated an imminent ability to defeat the cryptographic system securing Bitcoin (BTC), pushing back against warnings of a possible attack within months. The debate centers on the Elliptic Curve Digital Signature Algorithm (ECDSA), which authorizes transactions and protects crypto wallets. Guillemet said recent advances in AI-assisted mathematics represent meaningful progress but do not amount to a practical attack on the ECDSA system securing Bitcoin transactions. He also warned that a broad failure of asymmetric cryptography would extend far beyond Bitcoin, affecting internet security, banking systems, secure communications and critical infrastructure. The debate follows a warning from Ethereum Foundation researcher Justin Drake that advances in AI-assisted mathematics could put ECDSA at risk “within months rather than years.” Drake urged the crypto industry to prepare gradually, including by strengthening cold-storage protections and moving funds to fresh addresses whose public keys have not been exposed. Drake also cautioned against rushed transfers, saying poorly planned migrations could create additional risks. His preparation proposals were detailed in [earlier coverage of ECDSA risks](). The issue is separate from the quantum-computing concerns previously discussed by Guillemet. In that context, Bitcoin’s secp256k1 system has been described as vulnerable to a sufficiently powerful quantum computer, although no such machine currently exists. [Earlier TokenPost coverage examined public-key exposure and Bitcoin’s longer-term cryptographic risk](). Ethereum co-founder Vitalik Buterin has also warned that AI-assisted mathematics could create new risks for cryptographic systems. He has argued that wallet migrations should not begin without careful planning because rushed transfers could introduce fresh security problems. Bitcoin developer and Casa co-founder Jameson Lopp has taken a more cautious view of the immediate threat, saying the industry is focusing too early on a theoretical cryptographic break. He has argued that developers and wallet operators should prioritize code review, testing and operational security while continuing to monitor advances in cryptography. The industry therefore faces a choice between preparing for a potential future weakness and avoiding hurried changes that could create new vulnerabilities. No AI attack recovering an active Bitcoin ECDSA key has been demonstrated. ## Links in this article - [earlier coverage of ECDSA risks](https://www.tokenpost.com/news/technology/27651) - [Earlier TokenPost coverage examined public-key exposure and Bitcoin’s longer-term cryptographic risk](https://www.tokenpost.com/news/technology/24966)