Do EnderStorage Ender Chests prevent strangers from accessing them if they make a chest with the same color code by accident?
By default, all EnderStorage chests with the same color code will connect to each other, regardless of who placed those chests. However, you can make an EnderStorage chest private by right clicking on the latch with a diamond. This will cause the chest to also be associated with you, and will now only connect that chest to other diamond-latched chests with the same color code.