1. Block obdev.at in /etc/hosts by adding a line:
127.0.0.1 obdev.at
2. Install Program, and Restart
3. Block Little Snitch with Little Snitch, in Little Snitch Configuration click the New button, select Deny Connections at top, Choose Application: /Library/Little Snitch/Little Snitch UIAgent
4. Enter the serial number
5. Restart (I’m not sure if it’s necessary)