#1 Bitmart

On <a href = https://sites.google.com/view/bitmartt/>Bitmart</a>, a global cryptocurrency exchange, over a thousand digital currencies and commemorative items can be bought and sold in 180 countries. Although BitMart provides all of the features one would expect from a global cryptocurrency exchange, it was fixed in December 2021, resulting in the theft of approximately 196 million dollars' worth of cryptocurrency.