2026 Post-Quantum Tunnels: Fighting Harvest Now, Decrypt Later
IT InstaTunnel Team Published by our engineering team Post-Quantum Cryptography for Secure Tunnels: Fighting “Harvest Now, Decrypt Later” The Data You Encrypt Today Is Being Recorded for Tomorrow’s Decryption Welcome to 2026. If you’re still relying solely on RSA-2048 or standard Elliptic Curve Cryptography (ECC) for your production tunnels, you aren’t just behind the curve—you’re effectively leaving a time-capsule of your company’s secrets for future adversaries. The “Quantum Y2K” (or Q-Day) is no longer a distant academic curiosity. With NIST’s release of the first three post-quantum cryptography standards in August 2024, the industry has reached a critical tipping point. The threat is no longer about a “future attack”—it’s about the Harvest Now, Decrypt Later (HNDL) campaign currently being executed by well-funded state actors. The HNDL Crisis: Why “Later” is Actually “Now” The Harvest Now, Decrypt Later strategy relies on acquiring and storing encrypted data today, betting th...