When editing sensitive files VIM can store sensitive data in .viminfo
In home directory, edit:
.vimrc
Add:
set viminfo="0"
If you prefer registers for functionality, you can also add a new command for non register use of VIM.
(Users of VIM or VI hardly ever have an alias for starting vim as vim -i )
Add to .bashrc –> alias pvtvim vim=’vim -i’
using pvtvim will then start vim with -i – still cat .viminfo – just to be sure 🙂