Windows 11’s most important new feature is post-quantum cryptography. Here’s why.

Microsoft is updating Windows 11 with advanced encryption algorithms designed to resist quantum computing threats, which could render current security methods obsolete. Banks, governments, and online services rely on RSA and elliptic curve cryptography for data protection, but a fully realized quantum computer could break these systems overnight. As part of its effort to safeguard critical infrastructure, Microsoft has introduced updated cryptographic libraries in SymCrypt and SymCrypt-OpenSSL, ensuring robust security against future quantum attacks.