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>>Security warning: Ledger customers are being sent phishing letters about a critical quantum‑resistance update.

Security warning: Ledger customers are being sent phishing letters about a critical quantum‑resistance update.

crypthub

about 12 hours ago

Physical Mail Scam Targeting Ledger Users

Victims have received professionally printed letters that appear to come from Ledger, demanding a “Quantum Resistance Security Update.” The mail includes a QR code that redirects to a phishing site designed to capture the 24‑word seed phrase. The scam leverages personal data exposed in Ledger’s 2020 breach, allowing attackers to reference correct model numbers and order history.

Ledger’s Official Response and Quantum Concerns

Ledger reiterated that it never contacts users to request recovery phrases and warned against scanning the QR code. CTO Charles Guillemet explained that while current elliptic‑curve cryptography (ECC) remains safe, future quantum computers could break it using Shor’s algorithm. He urges the community to prepare now rather than adopt a “wait‑and‑see” stance.

Emerging Quantum Threat to Crypto Assets

Project Eleven predicts a cryptographically relevant quantum computer (CRQC) could appear by 2030‑33, making Bitcoin and Ethereum vulnerable. A March 2026 Google study showed 1,200 logical qubits could crack Bitcoin signatures in under 90 minutes. About 6.9 million BTC and over 65 % of ETH are stored in addresses with exposed public keys, susceptible to “harvest now, decrypt later” attacks.

Ledger’s Ongoing Mitigation Efforts

The company is monitoring quantum developments and working with the blockchain community on resilient solutions. It will provide firmware updates through official channels, not via unsolicited mail. Users are directed to Ledger’s security resources for guidance on current threats.