WatchGuard competes against other unified threat management (UTM) vendors including Astaro, Check Point, Cisco, Fortinet, Juniper and SonicWall. (Compare UTM products.) The new WatchGuard software versions includes spam blocking supplemented by a subscription service supported by Commtouch that relies on sensors placed around the Internet to detect spam outbreaks and head them off. If the WatchGuard software detects spam it drops it. The software also proxies e-mails, sends a hash of their attachments to a Commtouch server, which determines if the attachments are malicious and if so the proxy strips them off. With the new software release, WatchGuard has shifted from SNORT for intrusion prevention to IPS provided by Endeavor Security because its software screens using a larger set of malware signatures.