Althought PQC standards by the National Institute of Standards and Technology (NIST) are still pending, Google said it has acted to implement PQC now because attackers might capture conventionally-encrypted now with the intention of breaking it once they gain access to quantum capabilities at some point in the future (also known as the store-now-decrypt-later attack).
"Protecting ALTS against quantum-capable adversaries is a huge step forward in Google’s mission to protect our assets and users’ data against current and future threats."
