I saw many people's account are hacked any how.My question is how can anyone hack accounts? And how we can protect our accounts? I don't know if this topic should be written here but i really need these answer.
Hacking isn't much hard work for hacker. Not only account, they can hack database if they want. Depend on security. As far as I know security for forum is very strong.
You should care about your account like hide email, keep password strong. Account might be hacked for your mistake also. Several reason is behind of hacking, like phishing.
There is a helpful thread, it may help you ;
Bitcointalk account security