Of course they're motivated because its 'easy money' for them. Imagine those criminals thinking that they don't have to work for the rest of their natural life because of the huge money they scam from traders and investors. Shocking, but that's the truth behind the minds of those criminals and its sad at the same time because this kind of news will be put off against crypto by those governments or banks around the world who's hostile and anti-crypto. Another argument that they can throw at us if they wanted to attack again. Moral lesson is not to store huge funds in an exchange, or better stay off from trading platform who don't have reputation to begin with.