Vitalik Buterin Warns of Looming Quantum Risks—Ethereum Gears Up for a Security Overhaul

Jakarta, Pintu News – Ethereum is moving quickly to secure its network from quantum computing threats that are expected to emerge around 2028.

Vitalik Buterin, the founder of Ethereum, has revealed that quantum security is a top priority in the development of the Ethereum network. This was revealed at the Devconnect conference in Buenos Aires, Argentina, where Buterin laid out a long-term vision for Ethereum known as “Lean Ethereum”.

Quantum Security: Ethereum’s Top Priority

Lean Ethereum, introduced in July, is a framework for the long-term development of the Ethereum network that emphasizes simplicity, security, and efficiency.

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One of the most important aspects of this vision is “quantum resistance everywhere”. Buterin also warned that the cryptography securing Ethereum and Bitcoin could become vulnerable to quantum computing breakthroughs around 2028. Although many experts predict that major breakthroughs in quantum computing are still a long way off, the estimated time is now a serious concern.

Forecasting platform Metaculus estimates that quantum computers may be able to factorize an RSA number by 2034, almost 20 years earlier than previously thought. Some experts warn that quantum computing risks could emerge as soon as 2028 to 2033.

Ethereum Roadmap: What to Expect in the Future?

In the medium term (2025-26), Ethereum’s roadmap emphasizes scalability, including increased gas limits, enhancements like EIP-7732, and block-level access lists that allow parallel processing by nodes to increase throughput without sacrificing decentralization.

Buterin also put quantum resistance alongside a list of long-term improvements the team is researching, including zk-friendly VMs, zk-friendly hash functions like Poseidon, formal verification, optimal consensus, and faster finality.

Looking even further ahead (2026-27), Buterin outlines improvements focused on censorship resistance, increased decentralization, and increased account abstraction. All of this shows that Ethereum is not only focused on technical upgrades, but also on structural improvements and network security.

Recent Developments in Quantum Computing

In late October, Google announced a major algorithm breakthrough. The company revealed that it had achieved the first verifiable quantum gain by running its unordered time correlator (OTOC) algorithm.

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The OTOC algorithm is a computational algorithm designed to calculate OTOC, which is a specialized quantum correlation function used to diagnose quantum chaos, scrambling, and information propagation in many-body systems.

Meanwhile, IBM is working on the IBM Quantum Starling, which the company says could be the world’s “first fault-tolerant large quantum computer”.

It is planned to be handed over to clients in 2029. With the acceleration of quantum development and timeline compression, Ethereum’s push for early quantum resistance signals a broader shift: blockchain networks may soon need to prepare for a new cryptographic era-one in which quantum security becomes a basic requirement rather than a future consideration.

FAQ

What is Ethereum (ETH)?

Ethereum is a blockchain platform that allows developers to build and run decentralized applications (dapps).

Who is Vitalik Buterin?

Vitalik Buterin is the founder of Ethereum, which is one of the world’s leading blockchain platforms.

What is quantum computing?

Quantum computing is an area in information technology that uses quantum principles to process information faster and more efficiently than traditional computers.

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Reference:

• BeInCrypto. Quantum Computing: A Threat to Blockchain Security by 2028. Accessed on November 21, 2025
• Cryptopolitan. Vitalik Buterin: Quantum Computers Pose a Threat to Crypto Security. Accessed on November 21, 2025