For decades, cybersecurity researchers and computer scientists have warned about a future moment known as “Q-Day” — the point at which quantum computing becomes powerful enough to break the encryption systems that currently protect the world’s digital infrastructure.

What once sounded like a distant theoretical concern is now being treated as an increasingly urgent reality. According to recent projections from Google, Q-Day could arrive as early as 2029, significantly earlier than many experts had previously estimated. 

The accelerated timeline has intensified concerns across governments, technology companies, and cybersecurity agencies, all of which now face mounting pressure to prep...