There has been much kashrus confusion with Ferrara candies over the years.  These candies are popular in Mishloach Manos.  To avoid kashrus errors I suggest relying only on Atomic Fireballs and Jawbreakers that have the printed UMK supervision.  Due to many cases of confusion, misinformation, and mislabeling I recommend not using other Ferrara products even if they bear a kosher symbol.