Well, Etherdelta has also been hacked before so I dont think DEX can be s solution.
To avoid being hacked I suggest you to buy a hardware wallet and also buy two PCs. On the first PC, use it for crypto related purposes and never visit any website which are not trusted. Only use it for living to your exchanges and checking wallet... . On the second PC use it for normal purposes.
Never use the same email for more than one exchange. Also never use your exchange email address to signup for ICOs or airdrops or any other site . I know an ICO who sold its user's emails without their knowledge so create a different email for ICO and airdrop purposes.