2. What I mean, while viewing the html code from firebug, I am able to see my username from post comment part. In that case, when any visitor leaving a comment, I am not going to give them any reply as my username is obviously shown in the firebug. This will cause attention from the hacker.
On top of that, I am thinking whether I need to disable the key F12 and right click in order to prevent it.
3. Mine is a child theme of StartPro. Will it still affect ?