Europol and UC3M's Harvest Now, Decrypt Later Report, 7 October 2026: Which Captured TLS, SSH and OpenPGP Traffic a Quantum Computer Could Read, and Why Government Communications Rate High Risk

Europol and Universidad Carlos III de Madrid published a 40-page assessment of harvest now, decrypt later on October 7, 2026. It rates government communications and law enforcement files HIGH risk, maps which captured TLS, SSH and OpenPGP sessions a quantum computer could open, and tells high-risk holders to enforce forward secrecy, pilot hybrid key exchange and build a national post-quantum strategy.