Information
The contents of the /etc/issue file are displayed to users prior to login for local terminals.
Unix-based systems have typically displayed information about the OS release and patch level upon logging in to the system. This information can be useful to developers who are developing software for a particular OS platform. If mingetty(8) supports the following options, they display operating system information: m - machine architecture r - operating system release s - operating system name v - operating system version
Solution
Edit the /etc/issue file with the appropriate contents according to your site policy, remove any instances of m , r , s , or v :
# echo "Authorized uses only. All activity may be monitored and reported." > /etc/issue