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The Barracuda Spam & Virus Firewall is the world's best-selling email security solution. The Barracuda Spam & Virus Firewall 100 with 6 month Energize Updates Subscription includes best-of-breed spam and virus blocking, data protection, DoS prevention, large file transfer, email continuity, encryption, and policy management - all at one affordable price. As new email security requirements emerge, the Barracuda Spam & Virus Firewall is automatically updated with new capabilities to ensure long term protection. This easy-to-use product line is available in eight scalable models to fit the needs of any-sized organization. The Barracuda Spam & Virus Firewall is also available as a virtual appliance.