Ethereum Sets Ambitious Goal for Quantum Security with Strong Progress
By John Nada·Jan 27, 2026·2 min read
Ethereum is advancing towards quantum resilience, with about 20% of its execution complete. This proactive approach positions Ethereum ahead of potential quantum threats.
Ethereum is on track to achieve quantum resilience well ahead of any potential quantum threats. Antonio Sanso, a cryptography researcher at the Ethereum Foundation, expressed confidence about the blockchain's quantum security, stating that the research is largely completed and the community is now entering the execution phase. The Ethereum Foundation has made post-quantum security a strategic priority, recently forming a Post Quantum team led by Thomas Coratger.
Sanso revealed that while progress varies across Ethereum's execution, consensus, and data layers, the work is approximately 20% complete. Multi-client post-quantum development networks are operational, and the foundation plans to release a roadmap targeting a full transition without any loss of funds or downtime. This initiative is part of a broader overhaul known as Lean Ethereum, aimed at enhancing speed, simplicity, and decentralization while ensuring resistance to quantum attacks.
In contrast, Bitcoin's approach to quantum threats is more cautious, with leaders downplaying the urgency for change. Vitalik Buterin noted that while predictions for when quantum computers could compromise cryptography vary, Ethereum's proactive stance provides a significant advantage. Sanso anticipates that Lean Ethereum will be completed between 2028 and 2032, emphasizing the importance of addressing potential threats before they become reality.
As Ethereum moves forward, users can enhance their security by transferring Ether to new addresses, shielding them from quantum vulnerabilities. Ultimately, this ambitious push towards quantum resilience reflects Ethereum's commitment to innovation and security in an evolving technological landscape.