hack is not a good way for you to get the funds. this is one way to destroy your wallet ..
for the security you can exchange and trade token and you can save in your personal wallet this is a safe way to trade.
Agree with you, i also think hack is not a good way for get the fund. It is also destroy our wallet. A hacker can destroy one's wallet. It is not good for us. I hate hacking system. It is not good way to earn huge amount of money.
Exchanges are following securities but these will wait for which wallets to be hacked, now a days it is very easy for the hacker to hack the wallets.
This makes more people too afraid of the funds they held in the exchange wallet, most of the people are transferring their token to their concerned wallets after purchases.