Is there a method to make WinSCP remember the password during the whole session (e.g. until WinSCP is closed) without saving it on disk?
Password is remembered if:
- you type it already on login dialog (if you are using stored session, just load it , type in password and press login)
- you enable either of preference options "remember session password and pass it to putty" or "remember password of main session for background transfers"
Or maybe there is or could be a possibility to move password data from Windows Registry (where they are unsafe) to, for instance, a file on an encrypted volume.
Please read documentation