Norton Smartphone Security is the handheld equivalent of Symantec's famous PC protection utility. This Windows Mobile version provides real-time protection from network threats and a spam filter for SMS that lets you weed out unwanted messages through the use of blacklists and whitelists.
The installation procedure for Norton Smartphone Security is a bit long-winded, but once the program is running it offers an efficient and hassle-free way of protecting your device. The Antivirus module can be set to auto-protect your Smartphone, as well as giving you the ability to perform complete virus scans and schedule scans at preset intervals. Options include the ability to perform automatic actions when a virus is detected (Log Only, Deny Access, Delete, or Quarantine), perform regular updates via LiveUpdate, and configure proxies.
Annoyingly, the firewall element in Norton Smartphone Security, is located in a completely separate interface to the Antivirus section, so you have to close one to switch to the other. The firewall system is pretty efficient though, and there are four different security levels you can choose from (Trust No One, Paranoid, Cautious, or Trust All).
All in all, Norton Smartphone Security offers a convenient and efficient way of keeping the nasty stuff away from your mobile device.