OK, but that has nothing to do with how end to end the encryption is. PGP pretty much set the standard for the concept. BTW, in practice few people get any ben

OK, but that has nothing to do with how end to end the encryption is. PGP pretty much set the standard for the concept. BTW, in practice few people get any benefit out of forward secrecy when used for E2EE messaging as they tend to keep their old messages. Forward secrecy protects against the disclosure of the private key used in such systems. If the attacker can get at your private key then they pretty much for sure get your saved messages. I talked about this in a series of PGP advocacy articles I recently did: * https://articles.59.ca/doku.php?id=pgpfan:forward_secrecy https://articles.59.ca/doku.php?id=pgpfan:forward_secrecy