This news is equally interesting with 2016 at the end of the year when the Hong Kong crypto exchange was stolen about $ 65 million. By the end of 2017, after having completed the bitcoin price, it reached a new high of $ 20,000. Currently Upbit, binance are hacked platforms with large amounts of assets. Plustoken allegedly scammed an amount worth hundreds of millions of dollars in Bitcoin and ethereum. This is also a way to make Bitcoin scarce market. And to sell them they will have to push the price of bitcoin up and create a volume large enough to attract new sources of money from investors.
I think this is not entirely true, those scammers are contributing to pushing down the price of bitcoin as they are gradually exhausting the money they stole. Since the Plus token scam The bitcoin price has been steadily declining from the highest level this year.