A new report from Project Eleven warns that quantum computing could compromise over $3 trillion in digital assets within four to seven years. The report, released on May 9, 2026, highlights that elliptic curve digital signatures, which secure virtually all digital assets, are vulnerable to quantum attacks using Shor's algorithm. This vulnerability extends beyond cryptocurrencies to banking systems, cloud infrastructure, authentication networks, and military communications, as they rely on the same cryptographic primitives. The report emphasizes that a 'Q-Day' scenario—when a cryptographically relevant quantum computer becomes capable of breaking public-key cryptography—could occur as early as 2030, and no later than 2033. Large systems typically take five to over ten years to migrate to post-quantum cryptography, and the transition requires coordinated action across all stakeholders, including users, exchanges, custodians, wallet providers, and miners. The authors note that the primary challenge is not technical but rather coordination, urgency, and willingness to accept migration costs. For wallet and key holders, the implications are severe: private keys could be derived from public keys, allowing attackers to forge signatures and take control of wallets and digital accounts. The report warns that Bitcoin's migration may be particularly difficult due to its slow upgrade process, as seen with SegWit. Project Eleven CEO Alex Pruden suggests recycling vulnerable BTC tokens back into the supply curve. Users should prepare for a complex, multi-year transition and consider post-quantum secure solutions.

Key facts

• Quantum computing could break elliptic curve cryptography within 4-7 years.
• Over $3 trillion in digital assets are at risk, plus banking and military systems.
• Q-Day predicted between 2030 and 2033, with migration taking 5-10+ years.
• Bitcoin migration may take longer due to slow coordination and political issues.
• Private keys could be derived from public keys using Shor's algorithm.

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