It has been hard for several cryptocurrency exchanges to win regulator and user trust. There was a lot of manipulation happening over trade volumes ...
source https://www.google.com/url?rct=j&sa=t&url=https://thecurrencyanalytics.com/5012/reporting-extreme-dubious-volume-is-very-dangerous-for-cryptocurrency-space-and-the-investors/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNHxnG4hu7wuJrTioP3oS79uhRnc8A
