Prowl integrated failed authentication script wirtten in python.
PyAuthNotify is a simple python script written for integration with Prowl that checks the Auth.log every minute for multiple types of failed authentications. If it finds one, it sends a notification to prowl. After checking the log, the script backs it up and clears the log. This script reqiures the prowlpy library which you can find here https://github.com/jacobb/prowlpy
Do the following to add the script to you crontab as root
~# sudo nano /etc/crontab
add this line at the bottom:
*/1 * * * * root python PATH-TO PyAuthNotify.py
This script includes the prowlpy library which I have included.