Since 2.0.9 , there are some suggestion to add auto start, but the first release 2.1.0 and 2.1.2 were not well designed, as it didn't left user a choice to config the start up. again, thanks to many user who point this out. and here is new release , with the goal to service us better.
Auto start up: here is the answer. and I am thinking to change the default behavior at next release. so no worry.
1. You can disable auto start up with version 2.1.4 , by click on Option Button. It's very easy to do it. just directly on the top right side of the user interface with a button of "Option"
About Protection: Do you need to run netcut in order to be protected?
No, just netcut-defender is enough to protect your network.
Will netcut-defender be able to protect all my PC on network?
Only protect the PC which install the netcut-defender.
Are Both netcut and NetCut defender does the protect?
Yes, so if you run netcut and enable protect, you will be protected. if you run netcut defender you are protected too.