Solana Foundation Says Network Is Secure Against Quantum Threats

The Solana Foundation says the network remains secure against current quantum threats and can upgrade its cryptography as the technology develops. Technical Vice President Jacob Creech said users do not need to take emergency measures, while acknowledging that a complete transition to post-quantum security is still ahead.

Why Solana Says Users Are Protected

Creech’s assessment centers on Ed25519, the signature scheme Solana uses to authorize transactions. Solana derives signing keys from a secret seed, and that seed is not exposed on-chain. That design gives the network additional protection against attacks that attempt to recover private information from publicly visible transaction data.

The foundation has also developed and open-sourced a proof of concept that allows users to verify seed ownership and migrate to a quantum-resistant signature scheme. However, the code is not yet a finished, network-wide migration system that users can depend on in production.

A separate Winternitz Vault has provided quantum-resistant protection since at least January 2025. Winternitz signatures use a hash-based approach rather than relying on the elliptic-curve mathematics that quantum computers are expected to challenge.

Solana’s Post-Quantum Roadmap

The foundation has taken several steps to assess and prepare for the threat:

• Project Eleven partnered with Solana in late 2025 to conduct a quantum threat assessment.
• Client teams Anza and Firedancer selected Falcon as their post-quantum signature scheme in April 2026.
• Falcon aligns with standards supported by NIST, the US agency guiding the broader shift toward quantum-resistant cryptography.
• Solana has run post-quantum signature testnets so developers can evaluate the technology without risking live user funds.
• The foundation has published migration code that demonstrates how users could prove seed ownership while moving to a new cryptographic system.

The preparation is intended to avoid a rushed migration. A sudden, network-wide wallet move could create congestion, user errors and phishing campaigns built around fake “official” upgrade tools.

What This Means

Solana has a credible preparation strategy, but the most important pieces remain under development. Selecting Falcon, operating testnets and releasing a proof of concept show that a migration path exists; they do not mean the network has already completed a cryptographic upgrade.

For users, the immediate message is stability rather than urgency: there is no stated need for mass wallet migrations or offline “bunker mode.” For developers and validators, the key milestones will be moving the seed-ownership tool into production and demonstrating that post-quantum signatures can operate efficiently across Solana’s high-throughput network. Until then, quantum readiness is best understood as an active infrastructure roadmap, not a finished feature.