Dell SonicWALL provides multi-layer defense against viruses. This approach protects users from known viruses as well as 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 appears and the time a signature is developed and deployed. At the moment the outbreak occurs - 'Time Zero' - a virus has the opportunity to dosignificant 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 techniquesto stop 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 viruses are identified and safely quarantined, while known viruses are blocked by virus signatures.