Scammers of course try to prey on the innocent/naive, the gullible and the vulnerable. I used to love the series Hustle where the theme was it was impossible to con an honest man/woman. I also loved the Robin Hood element of this series where the "heroic scammers" always ripped off the greedy, selfish and dishonest often as punishment for their scams on the innocent. The idea of to catch a thief, you need to set a thief was fully explored in this show.
In your fictional world, who would count as innocent/naive, gullible and/or vulnerable? Why are they this way? Do they have people to stand up for them? Is there a criminal justice system with courts, prisons etc when the scammers are brought to book? Is this type of theft taken seriously enough?
How can people defend themselves against magical frauds? (I'd assume a magical fraud was designed not to steal money as such, you don't need magic for that, but to pinch magical gifts, powers etc). There could be some interesting stories in these ideas.