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.
Yes hacking is a big and major problem. Many a time a information platform hacked by hacker. A few days past my etherdelta.com account private key hacked and some of my important altcoins hacked.
Yes it is, as issue i heard few weeks ago, Etherdelta was being hacked down also, some of member privates key wallet was being stolen.
I think those hacker will not wasting time attacking our personal computer more, but they are targeting those web wallet service or exchanges database. As holder, it is important for us to choosing good platform wallet or exchanges for securing our asset.