Dell SonicWALL provides multi-layer defense against viruses. This approach protects users from known viruses as well as new, unique outbreaks. This real-time protection uses three types of anti-virus analysis. This comprehensive approach ensures that your e-mail remains secure before, during, and after a virus outbreak. Most anti-virus products rely primarily on signatures to stop viruses. These signatures are based on known viruses. Relying solely on this method leaves a dangerous window between the time a virus first appears and the time a signature is developed and deployed. At the moment the outbreak occurs - "Time Zero" - a virus has the opportunity to do significant damage to your computer system. Every passing minute until a signature arrives is enough time for a virus to multiply exponentially and compromise another portion of your network. SonicWALL's breakthrough Time Zero Anti-Virus Technology provides predictive virus defense complemented with responsive techniques tostop viruses as soon as they emerge. This technology is complemented with leading anti-virus engine from McAfee. With Dell SonicWALL Time Zero Virus Technology, e-mails potentially containing new viruses are identified and safely quarantined, while known viruses are blocked by virus signatures.