What can one do in addition to following best practices? Invest in some mobile security software. We were given a demo recently by Lookout and have to say we were quite impressed. Lookout offers security against phishing, malware, and spyware, backup, missing device location and management solutions for your Android, Windows Mobile, and Blackberry device. They have both a free and premium solution ($30 a year) and for the comprehensive array of services they offer we think that we would strongly consider going premium if we were Android users.
While there is no known malware for iOS users, there is an anti-virus app solution to vet files. VirusBarrier iOS lets you easily scan email attachments, other files you have access to on your iOS device, or files on remote locations such as MobileMe and DropBox, web servers or WebDAV and FTP shares. This app costs $2.99 and due to the secure design of iOS cannot run automatically or at scheduled intervals, but instead works only on demand.
What do you think, ae we a bit paranoid? Are you considering opting for some mobile security on your smartphone?