Symantec offers mobile security.

"The first announcement we’d like to highlight is Symantec’s Mobile Security Suite 5.0. According to the security company, the product is 'designed to provide customers with the same security and data protection capabilities on their Windows Mobile smartphones and PDAs as what has become standard for laptops and other computing devices.' The application will 'include antivirus, firewall, anti-SMS spam, and data encryption technologies.'"