Small write up discussing a method to crash vsmon.exe in ZoneAlarm version 8.0.020.000.
You can download it from the following link: https://packetstormsecurity.com/files/download/75086/zonealarm-dos.txt
Source: https://packetstormsecurity.com/files/75086/ZoneAlarm-8.0.020.000-Denial-Of-Service.html