How not to lose a cup

As it is possible that some players attack and pass 16% to 50% of my course and do not lose the cup. Of course it is one and the same player constantly.

Difference b/w trophies more than 600

Q: How not to lose a cup?

A: Don’t drop it  

Just a little comic relief

How not to lose a cup? Simple be inactives after 7 days. No one will be able to attack you.