I think there are a lot more hacks. I imagine it happens a lot but they are quiet when its only a few thousand dollars . Just search binance reddit people get phished and have their accounts drained all the time.
Binance goes case by case when it is one person because it is difficult to prove.
These guys were just did hundreds or thousands all at once, but it also means they can't use the crypto. It's difficult to imagine what their purpose is because they probably know it.
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