maybe this is true, but for now there are some exchangers who have improved their quality to ensure the security of assets stored on their platforms. This is to safeguard the security of their users' assets, such as yobit and binance that have grown and prove that they really deserve to be good exchangers. a few days ago I saved my assets in yobit exchangers and it was safe without any hacking. and now binance is proving that they are the best exchange by acquiring CMC. it might just be a dark period for some exchanges. and a little information that there is still a dangerous exchange if you store your assets there, namely probit. The security of this exchange is still in doubt because there are no reviews that say there is security.