Research on Bittrexs announcement of ban in 2017

Requirement:

The instructor is doing research on Bittrex’s ban of cryptocurrency pumps and dumps on its exchange. We want to have a complete understanding of what happened around November 24, 2017, for Bittrex.  Please do some Google search and find the answers to the following questions.  PLEASE ORGANIZE THE RESEARCH RESULTS IN A WORD OR AN EXCEL FILE, AND ALSO PROVIDE THE LINK YOU USED.

1) whether there were any events other than the announcement of the ban?
2) Maybe the information was leaked before the formal announcement?
3) Maybe the information was leaked before the formal announcement?

If you are not familiar with these cryptocurrency terms, you can read through this paper: (https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3267041). I ATTACHED IT FOR YOU.