Proton Mail rolls out post-quantum encryption for all users as industry braces for ‘harvest now, decrypt later’ threat

Proton Mail has today announced the rollout of post-quantum encryption (PQC) across its email platform, making quantum-resistant key generation available to all users, including those on free plans, in what the company describes as a proactive step ahead of the quantum computing era. The feature, which users can opt into via Proton Mail’s encryption key settings, allows the generation of post-quantum-ready keys for newly sent encrypted emails. Proton’s existing encryption standards, RSA and Elli