after we heard that the Binance market was hacked, and 7000 BTC was lost from the Binance trade, in your opinion, what were the decisions of traders and investors?
1. Will they stay at Binance?
2. Will they go to another exchange?
3. if they leave Binance, what exchange will they choose?
No exchanges are safe from hacker attack. Hacker will keep on their dirty game of stealing money so the first and foremost precautionary measure is not to keep anything in exchange wallet.
Secondly, Binance had created something called "SAFU" or "Secured asset fund for users" to deal with such unforeseen events. Do a little google search and you will find out more about it! Even though I use more than one exchange but I believe, with Binance - you are in safe hands!