• Install a good antivirus. Free or Paid is good, but dont used cracked or pirated versions.
• Install real-time anti-spyware protection
• Update your Anti-virus programs daily.
• Perform scans on your computer daily.
• Disable autorun to prevent infection from pendrives.
• Disable image previews if usiing Outlook
• Use good anti-virus which has browser plugins and scans all URL's for malacious content.
• Use Hardware based Firewall.
• Dont click on any mail links or attachments from unknown sources or malacious users.
• Never download softwares from third-party sites. Download from original website. Dont use cracks or keygens which may be a virus/trojan itself.
Security tips to Aviod Virus /Trojan/ Keylogger Infection.