I am looking for a program like this one: Laptop Alarm - Boost your laptop security!
However, the feature I need
is for an alarm to sound when someone unplugs the ethernet cable
I am not necessarily looking for software that will notify another computer or cellphone that my ethernet cable has been unplugged.
It needs to at least trigger a loud alarm.
Someone has been unplugging my laptop ethernet constantly without plugging it back in, even though it is limited to only using 4% of the bandwidth.
I've made several tests and discovered that it makes no difference in their gaming performance. What is probably causing their issue is that they are trying to play games with people back in the states rather than in Japan (we are in Tokyo).