Be smart with your shit. You had a keylogger and rat clearly on your shit. That is your fault. You can put all the security you want on anything but the best security is your brain.
But I don't mean to be hard on you, I went through something very very similar. Lost 3 bitcoins within the first month of me buying them many months ago due to my wallet.dat file being straight up stolen.
How was your wallet stolen? It would help us noobies if you expanded answers so others can learn from others mistakes. No?