Just Play It Safe, Only x2 DMG & x2 DEF, That's Enough For Me. And Sometime Ago I Also Used This Only x2 Trick on CC, Then Of Course My Account Is Still Safe Until Now.
I played in the event (CC), I didn't use the No Card Cost mod but only used x3 / x2 DEF & x2 DMG for one week, and yes until now my account is still safe