Perfect Forward Secrecy Made Your Private Keys Boring
For twenty years, a stolen private key was a disaster. It meant total compromise. Every encrypted conversation, password transmitted, API call ever made was readable. Traffic was being recorded all the time, “just in case” your private key leaked out. The NSA even had a name for it: “harvest now, decrypt later.” Record all the encrypted traffic today. Steal the private keys tomorrow. Decrypt everything retroactively.