Crypto Industry Prepares for Quantum Threats with New Signatures

Severity: Low (Score: 39.9)

Sources: Kucoin

Published: 2026-05-17 · Updated: 2026-05-18

Keywords: q-day, quantum, crypto, industry, solana, near, race

Summary

As concerns about quantum computing's potential to break current cryptographic systems rise, blockchain platforms Solana and NEAR are advancing their preparations. Solana has begun testing the Falcon signature scheme, a quantum-resistant digital signature tool, which is designed to be activated without significant performance impact. NEAR's research team emphasizes the risk of ownership disputes arising from quantum-enabled attacks, planning to launch a testnet solution with FIPS-204 signatures by Q2 2026. The National Institute of Standards and Technology (NIST) has urged organizations to migrate to quantum-resistant algorithms to prevent future vulnerabilities. While quantum computers capable of breaking encryption do not yet exist, the industry is shifting from theoretical discussions to practical preparations, addressing risks like “harvest now, decrypt later.” Key Points: • Solana and NEAR are testing quantum-resistant signature schemes to secure their networks. • NIST recommends immediate migration to post-quantum cryptographic standards to mitigate future risks. • Quantum attacks could lead to ownership disputes over stolen assets, complicating recovery efforts.

Detailed Analysis

**Impact** Cryptocurrency networks, including Solana and Near One, are preparing for the potential compromise of public-key cryptography by future quantum computers. The scope affects wallets, validation nodes, exchanges, cross-chain bridges, and custodial services globally. Risks include theft of private keys, invalid transaction signatures, and disputes over asset ownership on-chain. The industry faces operational challenges in maintaining transaction integrity and asset control as quantum threats evolve. **Technical Details** Solana’s validator clients Anza and Firedancer are testing the Falcon post-quantum digital signature scheme, specifically Falcon-512, which offers smaller signature sizes to reduce performance impact. Near One is developing a testnet using FIPS-204 quantum-resistant signatures to address ownership verification issues after quantum-enabled transaction forgery. No malware, CVEs, or specific attack infrastructure are reported; the focus is on cryptographic algorithm migration and signature scheme upgrades. **Recommended Response** Organizations should inventory cryptographic systems in wallets, nodes, exchanges, bridges, and custody services to identify vulnerable algorithms. Initiate migration planning toward NIST-approved post-quantum cryptographic standards, prioritizing deployment of quantum-resistant signature schemes like Falcon and FIPS-204. Monitor developments in quantum-safe cryptography and testnet rollouts to validate integration without degrading network performance. No immediate patches or IOCs are available; focus on long-term cryptographic resilience.

Source articles (2)

• Solana and Near One Race to Deploy Post-Quantum Signatures Ahead of Q-Day — Kucoin · 2026-05-17
  Q-Day—the day quantum computers become powerful enough to break the cryptography that underpins the internet—has returned to the spotlight, and the crypto industry is starting to act. CNN’s recent cov…
• Multiple Blockchains Test Quantum-Resistant Solutions Amid Rising Concerns — Kucoin · 2026-05-17
  Discussions quantum computing potentially breaking existing cryptographic systems are once again driving the crypto industry to accelerate the deployment of protective measures. As the concept of "Q-D…

Timeline

• 2026-05-17 — Solana tests Falcon signature scheme: Solana's validator clients Anza and Firedancer begin testing Falcon, a quantum-resistant digital signature tool.
• 2026-05-17 — NEAR plans testnet for FIPS-204 signatures: NEAR One announces plans to launch a testnet solution with FIPS-204 quantum-resistant signatures by end of Q2 2026.
• 2026-05-17 — NIST urges migration to quantum-resistant algorithms: NIST releases post-quantum cryptography standards and advises organizations to begin migrating from vulnerable algorithms.

Related entities

• Data Breach (Attack Type)
• Falcon-512 (Platform)
• NEAR (Platform)
• Solana (Platform)