if something has a beneficial nature with real good ivs chances are it;s edited. if a gen 6 event is shiny when it can't be its hacked. most gen 6 events have 3 perfect ivs by default so if it has less it;s hacked. then there are gen 6 events with wrong sid. each gen 6 event has a certain sid and you'd need to be able to check it with some program.