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 […]

The post Proton Mail rolls out post-quantum encryption for all users as industry braces for ‘harvest now, decrypt later’ threat appeared first on IT Security Guru.

May 5, 2026
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