Forward Secrecy’s day has come – for most. The cryptographic technique (sometimes called Perfect Forward Secrecy or PFS), adds an additional layer of confidentiality to an encrypted session, ensuring that only the two endpoints can decrypt the traffic. With forward secrecy, even if a third party were to record an encrypted session, and later gain access to the server private key, they could not use that key to decrypt a session protected by forward secrecy. Neat, huh?
Read the full article published May 23, 2018 here: https://www.securityweek.com/fitting-forward-secrecy-todays-security-architecture by SecurityWeek.