Abductware
Software which is specifically designed to forcibly take data away against the owners will and which destroys the original data, while holding the abducted data for ransom or for other purposes.
Holy crap! A nefarious cyber villein's abductware has copied and removed all my evaluable and embarrassing data, and the monster wont give it back until I cough up a pretty rude ransom payment or else, I'm warned, something much, much worse will happen.