For non-interactive scripts there probably isn't much you can do. I've always wanted to setup an interactive honeypot ssh server which prints the standard mess

For non-interactive scripts there probably isn't much you can do. I've always wanted to setup an interactive honeypot ssh server which prints the standard message for a rejected login and then pretends to close the connection, while running a keylogger to hopefully intercept some command which asks for password. The major obstacle is that people customize their prompts, although many probably use whatever is set by default on Ubuntu.