Solana Quantum Threat Experiment Reveals Trade-Off Between Security and Speed

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Solana’s project announcement reveals a quantum threat experiment using post-quantum signatures on its testnet via Project Eleven. Early results show that quantum-safe signatures are 20–40 times slower, resulting in a 90% decline in transaction speed. The network’s public key design leaves it fully vulnerable to quantum attacks—more so than Bitcoin and Ethereum. CEO Alex Pruden warned that delaying fixes could take up to four years, and a potential security breach remains a risk if no action is taken.

Odaily Planet Daily reports: As Bitcoin developers urgently seek quantum-safe solutions and Ethereum prepares for "Q-Day," Solana is attempting to proactively address potential threats. Project Eleven has partnered with the Solana Foundation to deploy post-quantum signatures on the test network, simulating network performance after replacing existing cryptographic algorithms. Initial results show that quantum-safe signatures are approximately 20–40 times larger than current signatures, causing a roughly 90% reduction in transaction processing speed—directly undermining Solana’s design advantages of high throughput and low latency.

Additionally, Solana’s public key design exposes the entire network to 100% quantum attack risk, allowing hackers to attempt private key recovery on any wallet. In contrast, Bitcoin and Ethereum face technical and community coordination challenges. Solana is leading the industry in quantum security experiments and currently has a fully operational quantum-secure testnet. Alex Pruden, CEO of Project Eleven, stated, “If the industry waits until the quantum threat is real to begin fixing it, it could take four years.” (CoinDesk)

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