[jayess]

Please expand on that. What encryption is vulnerable and what isn't?

[mickronome]

I don't know a lot about it, only just enough to know what search term to look for, and Wikipedia had an article that probably fits the bill: https://en.m.wikipedia.org/wiki/Post-quantum_cryptography

[jwilk]

Non-mobile link:

https://en.wikipedia.org/wiki/Post-quantum_cryptography

[Zaak]

Symmetric encryption will need to double key lengths, such as using 256-bit AES keys instead of 128-bit.

All currently popular forms of asymmetric / public key encryption (including RSA and ECC) are vulnerable to quantum attack.