WatchGuard Extensible Content Security (XCS) solutions deliver the industry's best email security, web security, and data loss prevention to provide an extensive risk management boundary. With six different models to choose from, XCS appliances meet the email security requirements of business of all sizes, including solutions to protect the world's most demanding email and web networks. Small to mid-sized businesses don't need to pay high prices for powerful email security. WatchGuard XCS 170, 370 and 570 Appliances are affordable, complete email security solutions that defend against inbound threats including viruses, spam, blended threats, phishing, spyware and network attacks. Block 98% of unwanted traffic at the perimeter and boost your email security and performance without breaking the bank.