The company has updated its outlook on so-called “Q-Day,” the moment when quantum machines become capable of defeating widely used cryptographic systems. The new estimate points to 2029, even earlier than projections that assumed a longer timeline.
Q-Day refers to the point when algorithms like RSA and ECC may no longer be secure. These systems underpin much of the modern internet, protecting communication, financial data, and government infrastructure. If they fall, it would trigger a global transition to new cryptographic standards designed to withstand quantum attacks.
Google has been working on post-quantum cryptography for years. It is testing algorithms built to resist quantum computers and gradually rolling them out across its systems, including Chrome and its network infrastructure. The goal is to get ahead of the moment when current protections stop being enough.
The revised forecast reflects how quickly quantum computing is advancing. Today’s machines still face major limitations and high error rates, but the pace of progress suggests the risk could materialize sooner than expected.
Unfortunately this isn’t just a future problem because there is already a “harvest now, decrypt later” scenario, where data is collected today and decrypted once quantum technology matures. That risk is especially relevant for sensitive information that needs to remain secure for years, like government or strictly confidential military data.
In my view, Google’s push may well come from a genuine concern about infrastructure and user security. At the same time I just can’t get over the feeling that it gives the company a strong opportunity to promote its own cryptographic solutions and steer users toward its ecosystem rather than competing services.