FTPSsä
FTPSsä is a proposed extension to the File Transfer Protocol Secure (FTPS) that appears in some security research discussions as a hypothetical, non-standard variation aimed at strengthening FTP over TLS. It is not an official standard and has no widespread deployment.
Overview: The central goal of FTPSsä is to improve authentication, data integrity, and key management while
Technical characteristics: The design envisions mandatory or optional mutual TLS (mTLS) for client and server authentication,
Adoption and compatibility: Since FTPSsä is not standardized, adoption is limited and interoperability with existing FTPS
Security considerations: Proper configuration is essential; incomplete PKI management or weak cipher selection could nullify benefits.