Early this morning I woke up and noticed on my watch only wallet in BlueWallet and Sparrow desktop that someone has initiated an unauthorized transfer of all of my UTXO's to a BTC address that is not mine. It has not confirmed yet. It is showing as a low priority transaction that is set to clear in about 3 hours.I am unable to enter a higher priority transaction to drain my wallet before this unauthorized transaction does. Because Sparrow says I have an insufficient balance.

Doesn't this unauthorized transaction always need my signing device in order to finalize the transaction?

Any ideas what I should do? Thanks