In an article titled “Mobile Security: Danger Lurks on your Mobile Web Browsing” I had listed out reasons why it is getting increasingly treacherous to surf the web on your mobile phone or PDA without adequate protection. Surprisingly, many people are unaware of the need to secure their phones. Listed here are some of the best tools for mobile security:

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Kaspersky Mobile Security: Kaspersky is an Industry leading anti-virus provider and its suite of products also has a robust “Mobile security” product which is top grade. It boasts of an anti-theft protection that either blocks or deletes all your personal information when lost or stolen. It also prevents your phone from all kinds of malware and spyware and also protects your PC from getting infected when synchronizing. You can always remain up-to-date thanks to the very prompt upgrades from this vendor straight to your phone -- the frequency of these upgrades can be set by the user.
Pros: Offers a Trial Mode, Robust Anti-virus package, Available for both Symbian and Windows Mobile, Best virus detection rates in the Industry, easy to install and activate.
Cons: Frequent Upgrade schedules eats up mobile phone’s battery life.
Cost Per License/yr: 29.95 USD
Vendor Link: http://usa.kaspersky.com/store/