A G7 cybersecurity working group urged governments and companies to immediately begin shifting to post-quantum cryptography, warning that technology threatening existing public-key systems is advancing faster than expected. It highlighted the risk of attacks that harvest encrypted data now and decrypt it later. The EU has set timelines for migration. Bitcoin is considering BIP-360, while Ethereum plans broader upgrades. Larger post-quantum signatures could raise storage, bandwidth and transaction costs.

Twenty-one major global financial institutions have begun work to jointly establish a stablecoin issuer, with a plan to launch a U.S. dollar-based stablecoin in the first half of 2027. Participants include Bank of America, Goldman Sachs, Citi, Deutsche Bank, UBS, Santander, MUFG and Fidelity Investments. The group plans to focus first on a dollar stablecoin and later expand to products based on other G7 currencies, with a euro stablecoin listed next.