Bithumb and Coinone have both flagged zkSync (ZK) as an investment caution item due to a recent security breach. In a statement released on their respective websites, the exchanges cited a hack of the ZK administrator's wallet on June 15th, resulting in the theft of approximately $5 million in unclaimed funds. The exchanges emphasized that the decision to designate ZK as an investment caution item stemmed from a perceived "lack of prevention of recurrence" regarding the security vulnerability. While the immediate impact on ZK's price remains to be seen, investors are advised to exercise caution and conduct thorough research before trading the token on these platforms. This designation serves as a warning about potential risks associated with ZK. ```