Vitalik Buterin Warns of Quantum Threat to Crypto Security
- Main event: Vitalik Buterin highlights significant quantum threat to crypto security.
- Ethereum faces potential security risks from quantum technologies by 2030.
- Increased focus on developing quantum-resistant solutions in crypto.

Vitalik Buterin, Ethereum co-founder, warned of a 20% chance that quantum computers could threaten blockchain security by 2030, sparking discussion on X/Twitter on August 27, 2025.
The announcement highlights growing concerns over crypto infrastructure’s readiness against quantum threats, triggering a shift toward quantum-resistant cryptographic measures and increased institutional investment.
Vitalik Buterin, Ethereum’s co-founder, issued a stark warning regarding the emerging quantum computing threat to blockchain security, via his X/Twitter account on August 27, 2025.
Buterin’s warning suggests that quantum technology could heavily impact blockchain infrastructures by 2030, impacting crypto assets like Bitcoin and Ethereum.
20% Chance of Quantum Breach by 2030
Ethereum co-founder Vitalik Buterin has predicted a “20% chance” of quantum computers breaking modern cryptography before 2030. This announcement underscores the urgency for quantum-resistant solutions. Buterin emphasized the threats posed by quantum capabilities, which could eventually compromise cryptographic infrastructures. Experts like Justin Drake focus on developing resistant signatures as part of Ethereum’s security initiatives.
“Justin Drake is working on quantum-resistant signatures. STARKs are already quantum-resistant. Great progress is being made in this area, and I’m optimistic that Ethereum can adapt.” — Vitalik Buterin, Co-founder, Ethereum
Investments in Quantum-Resistant Tech Surge
The immediate impact has been heightened attention on blockchain security. Market experts voice concerns over potential vulnerabilities in Bitcoin and Ethereum. The announcement has prompted increased investment in quantum-resistant technologies, with funding exceeding $100M. Financial implications include projected growth in post-quantum cryptography market, expected to reach $21.27B by 2034.
Accelerated Timeline: New Urgency for Blockchain
Past warnings about quantum threats predicted significant risk in the 2040s. Buterin’s aggressive timeline presents a stark acceleration. Projects like QRL and Starknet are gaining attention as they work on quantum-resistant solutions, driving institutional interest. Historically, technological adaptation followed prior warnings, and current trends suggest a similar trajectory for the crypto industry.
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