Generally, enterprises sit and wait until hackers and viruses cause damage before they gear up and react. Driven by the need to stay out of disaster-driven headlines, organizations are seeking out software that can protect them against Web content vandalism and theft. With the growth of telecommuting and the rise of the Internet, the corporate perimeter has expanded from its traditional boundaries into home PCs and employee laptops. I don't have any antivirus software running. Maybe you shouldn't either.
Virus scanners provide false security.