Is so old it used to run on top of NCP (Network Control Program) before switching to the internet protocol suite, TCP/IP, in 1980. As of 2017, it’s now about 46 years old.
https://nakedsecurity.sophos.com/2017/09/18/chrome-to-brand-ftp-as-not-secure/
origin - http://www.pipiscrew.com/?p=9994 chrome-to-brand-ftp-as-not-secure