It's rare to have a trojan on your computer by merely visiting a site, although it sometimes happens. Trojans arrive on to compromised computers in quite a few ways. The Storm trojan proved to be a cataclysmic event that a number of folks won't ever forget.
Trojan Virus Explained
Malware scanning software is something that you can install to offer extra support to your antivirus program. If your computer isn't up to date then viruses are likely to become through and infect your PC. You should make sure your computer is well protected in the future and the ideal approach to do that's to understand how to provide it with elevated levels of security