actually there are some tools that function as a defense most of your computer but this time other than the firewall, I also encourage you to further increase your security .... tolerable than not at all, and a little difficult to do in the hacker act (at least that only professionals can break down your site or your computer. heheheh )

this is the some of many tools

PC + Browser protection >
PC protection >
Browser protection >
Firewall protection >
Virus protection >
Spyware protection >