Players cannot hit other players that are under 30% of the player rank 1 level
Example, if the top player level is 150, 30% = 45, and your level is 75, you cannot hit any players between level 30 and 120
Players bellow level 30 also cannot hit you or they will lose their protection for 72 hours
Players above level 120 cannot hit you outside your own bases or starbases
New bases cannot be hit in its first 48 hours
Any ships at empty astros or bases from other players, can be hit by anyone
If a strong player hit any ship from a weaker player over an empty astro, the attacked can respond without losing level protection for 72 hours