It happen some time ago and since my Norton Internet Security had block numerous HTTP Malicious toolkit Variant Activity 2 intrusion, at first I didn't worry much but recently it's happening more frequently and Norton took the same procedure of blocking it. However, this risk is only ever happening when I access one certain site, I want to know is it something I should be concern about. And if I stop accessing the site that the risk is appearing at will it stop or is there something attacking my computer that Norton isn't picking up?