Here is what quantum computing cannot do today: break the encryption protecting your bank account, your messages, or government secrets. Here is what it might be able to do in somewhere between five and fifteen years, depending on which researcher you ask: exactly that. The gap between 'not yet' and 'eventually' is where an entire investment category is quietly being born, and this week's announcements make the timeline feel less hypothetical.
What Post-Quantum Security Actually Means
Standard encryption works by making a mathematical problem so hard that no conventional computer could solve it in a useful timeframe. A quantum computer, which can exist in multiple computational states simultaneously rather than the binary on/off of a regular chip, could in theory solve certain classes of those problems orders of magnitude faster. The word 'could' is doing real work in that sentence: the machines that exist today are noisy, error-prone, and nowhere near large enough to threaten real-world encryption. But Creotech Quantum's commercialization of a QKD system, where QKD stands for Quantum Key Distribution, a method of sending encryption keys using individual particles of light so that any interception is physically detectable, is a real product shipping now. And Courtney Olujobi of Moon Pursuit Capital argues plainly in a guest post this week that post-quantum security is where patient investors should be looking first, precisely because it doesn't require a working quantum computer to have a market. Governments and enterprises need to upgrade their encryption before the threat arrives, not after.
The Security Playbook Running a Decade Ahead of the Threat
DigiCert's launch of Quantum Central, a dashboard for tracking post-quantum cryptography readiness, is the clearest sign that this is now a compliance story, not just a research story. Compliance stories have predictable revenue. The parallel to cybersecurity's own expansion after the 2010s breach era is hard to miss: the money moved years before most of the attacks materialized. The useful version of a quantum computer that could actually break encryption in the wild is probably a decade away at minimum. The useful version of a post-quantum security business is already here. TurboFund's cybersecurity investor list is where founders in this space should start mapping who is already paying attention to the infrastructure layer that quantum threatens.