any conclusion on what money method is safe?

So I modded a few accounts with Rich Money (200bil and 3x 500 mils) - Long story short, all banned after a day. However, prior to fragment 2.0.4, i modded a fresh account with 300mil (about 2.7mil continuously done until 300mil in one night, not spread out at all) through the bunker method on kiddio...