The threat posed by post-quantum technology is no longer theoretical; it is already shaping the risk landscape today. While quantum computing promises groundbreaking advances, it will simultaneously undermine the cryptographic foundations that protect our digital economy. What has changed is the timeline. The question is no longer whether quantum computers will crack current encryption, but when. Attackers are already exploiting this vulnerability. “Harvest now, decrypt later” has become the biggest concern for businesses, with 61 percent of IT security professionals surveyed in Thales’ Data Threat Report citing it as their greatest quantum risk. Sensitive data stolen today might not be exposed for years, creating a long-term security risk that many companies still underestimate. At the same time, most companies are unable to react effectively. Only 34 percent of those surveyed in the report have complete transparency about where their data is located. Less than half of sensitive cloud data is encrypted. You can't protect what you can't see – and in the quantum context, this transparency gap becomes a strategic, not just an operational, risk. Post-Quantum Cryptography There are now signs of progress. Nearly six out of ten companies are already experimenting with post-quantum cryptography, signaling a shift from awareness to action. But experimentation alone is not enough. The real challenge lies in scaling this transition: embedding crypto agility, modernizing key management, and determining where cryptography stands in increasingly complex, cloud-first environments. Preparing for a post-quantum world is not a one-time upgrade; it's a transformation of how organizations approach data security. This means acting now: identifying cryptographic dependencies, prioritizing high-value data with long confidentiality cycles, and laying the foundations for quantum-safe architectures. Organizations that start now will be best prepared for the quantum age. Advertising Subscribe to our newsletter now Read the best news from B2B CYBER SECURITY once a