Justin Sun confirmed on September 25 that his crypto exchange Huobi (recently rebranded to "HTX") had been hacked for 5,000 ETH ($8 million) the prior day. He reassured customers that the exchange would be covering the shortfall, and that "all user assets are #SAFU".
Sun offered a bounty to the hacker to return 95% of the funds, also promising to hire them as a "security white hat advisor" for the exchange. Otherwise, he threatened to go to law enforcement.
Two weeks later, the thief returned the funds, with a note that their hot wallet key had leaked. Huobi paid the $410,000 bounty.