Hackers will not stop, just because money is a tentative target for them. So, any engine involving cryptos will always be a target for hackers, online wallets, exchangers, casinos, etc. Each one should look for their own security, for you as bitcoin user there are some ways to manage your bitcoins by the secure way, but when we talk about security of a online system things are more complex.

The good news is there are lot of White hat hackers searching for those vulns and helping to fix them before the bad guys found them and exploit those vulns.