I am using McAfee Anti virus since about two years. It blocks unknown e-mail worms. It also scans inbound e-mail, outbound e-mail, and IM attachments. It has detailed virus database and world map. My PC is very much cleaned just because of McAfee Virus Scan. Version 9.0 of McAfee VirusScan enhances the program’s efficiency and level of protection. Cons: Specific areas of improvement include better handling of large e-mail attachments and blocking.
Recommended!!