This is the oldest trick in the book. A scammer will put a high-value fruit (like a Dragon or Kitsune) in the trade window. While you are busy adding your fruits, they quickly swap it for a fruit with a similar color or icon (like a Falcon or Barrier) and hit "Accept" immediately.
When the trade window opens:
If a deal feels too good to be true, it’s because it is. No one is giving away a Perm Dragon for a single fruit storage." trade scam script for blox fruit dragon update exclusive
For more official safety tips, you can review Roblox's account security guidelines. Eating DRAGON Fruits In Front of SCAMMERS Blox Fruits This is the oldest trick in the book