A recent report from Project Eleven indicates that around 65% of Ethereum and all of Solana are potentially at risk from attacks by quantum computers.
These new figures come as blockchain technologies are increasingly focused on protecting against possible threats from future quantum computers.
Ethereum and Solana Quantum Risk Mapped in 2026 Report
A recent report indicates that Ethereum relies on three technologies that could be at risk from quantum computers. These include ECDSA, which protects user accounts; BLS signatures, used for its proof-of-stake system; and KZG commitments, which help manage the new ‘blob’ data format introduced with an upgrade called EIP-4844.
If a hacker with a quantum computer were to steal the cryptographic keys used by network validators, they could create fake confirmations, disrupt the system’s agreement process, and potentially cause significant penalties for many validators. These validator keys become publicly available as soon as someone deposits 32 ETH to become a validator.
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Solana has a fundamental weakness in how it’s built. Unlike some other cryptocurrencies, Solana includes each user’s public key directly in their on-chain address, making it visible. Bitcoin, with its UTXO system, offers some privacy because keys for unused funds can remain hidden.
According to the report, Solana uses a type of public key that makes it susceptible to attacks from quantum computers.
Where the Post-Quantum Migration Plans Stand
Both Ethereum and Solana are getting ready for the possibility of threats from quantum computers. In March 2026, developers with the Ethereum Foundation created a website dedicated to preparing Ethereum for the post-quantum era.
The team estimates that improvements to the core protocol (Layer 1) could be completed by 2029. However, fully switching over to the new system will take longer.
In April, two Solana validator client developers, Anza and Firedancer, both chose to use Falcon, a new signature scheme that’s been approved by the National Institute of Standards and Technology (NIST). The Solana Foundation stated they have this plan in place and can activate it whenever necessary.
The Solana team stated that while quantum-resistant technology is still several years off, they’ve already thoroughly researched and prepared the necessary steps to update Solana when it becomes available.
Project Eleven explores three possible futures, labeled by their estimated timelines: 2030 represents the most positive outcome, 2033 a more realistic one, and 2042 the most challenging. The analysis highlights that these predictions are based on gradual progress and don’t anticipate any significant, unexpected advancements.
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2026-05-07 09:32