Answers:
a obedient firewall
Hi, you can use ZoneAlarm (free or bussiness variation depending on your requirement of protecting).
Try it here:
http://www.zonealarm.com/store/content/c...
As Mad-Eye Moody said:
"Constant Vigilance".
There is no surefire mode on how to prevent hackers (otherwise we wouldn't own adjectives these lots anti-malware offerings on the market).
Installing an anti-virus program (such as Nod32), an antispyware program (such as SUPERAntiSpyware), an antitrojan program (such as Comodo BOClean) and a wearing clothes firewall (such as the abovementioned ZoneAlarm, or Outpost firewall, or Comodo's free firewall) are freshly key steps on the instrument of computer guarantee.