This is the latest Anti-Virus software I am using to protect my computer from any internet attacks. It offers a 30 day free trial for you to evaluate the software. A single one year license cost US$39.95.
Key Features

• Protection from viruses, Trojans and worms
• Protection from spyware, adware and other potentially hostile programs
• Antivirus scanning for removable data storage media
• Scanning and disinfection of archived files
• Protection from dangerous macros in Microsoft Office documents
• Rollback of changes made by malicious programs on your computer
• Support for Windows Vista™ and 64-bit systems

For more info, please visit Kaspersky>>>