The “Harvest Now, Decrypt Later” Threat While a full-scale quantum computer capable of breaking current RSA encryption is still on the horizon, the threat is active today. Cybercriminals are currently engaging in “Harvest Now, Decrypt Later” attacks—stealing encrypted data now so they can unlock it the moment quantum computing matures.
What is Post-Quantum Cryptography (PQC)? PQC refers to cryptographic algorithms—usually based on complex math like “lattices”—that are designed to be secure against both quantum and classical computers. In April 2026, we are seeing the first mass-market rollout of these standards.
How to Prepare in 2026:
- Update Your VPN: High-end VPN providers (like NordVPN and Mullvad) have introduced “Quantum-Resistant” tunnels. Ensure your app is updated to the 2026 version to enable this protocol.
- Use PQC-Enabled Messaging: Apps like Signal and iMessage have already integrated PQ3 protocols. If you are a business, ensure your internal communications use end-to-end encryption that specifically lists “Post-Quantum” as a feature.
- Inventory Your Data: Businesses should identify “long-life” data (data that must remain secret for 10+ years) and prioritize it for re-encryption using new NIST-approved quantum-resistant standards.
