A lot of my clients have been asking me this question. I believe very strongly in protecting oneself from mobile onslaught of viruses. The truth be told, for the most part, you are fairly safe, that is if you don't download ringtones, don't download little music/video files your friends send you via MMS, and don't download/install Apps, from either an App Store (Like Android's Market), or from other locations.
First off, lets review the biggest competitors, and what kind of threat you can assume:

:: The
iPhone
Apple actually did something right. By limiting the App Store and limiting the iPhone to only allowing apps from the AppStore, it is protecting its users from MOST attack vectors. But here is whats happening:
- People unlock their phone
- Download homemade apps from non-apple authorized app store.
- Infection.
So why unlock? There are a lot of possibilities. And it does open up for a more open development network. This actually allows users to extend their current use of their phone, and prior to iOS4, it allowed multitasking.
But what else? Apple recently had an issue with a PDF exploit, that would compromise the user's iPhone. There are still ways to hack an iPhone if its BlueTooth is enabled and not properly protected. These also allow for other exploits to come as a result of the initial unlocking of the phone. Apple, so far, is the best at protecting its end-user, but ultimately, if someone really knows what they're doing, they can get past any type of security. Because of how popular the iPhone is, its likely to be the main target continuously. So is it the safest choice? Yes and No. If you're not protecting your other options, then yes. If you don't unlock it, you're more protected, and if you don't leave your bluetooth on, you're even MORE protected.
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Android
So Android is a completely different monster. Because of its open concept, its entirely opposite of Apple. ANY app on Market could potentially be a virus/trojan/spyware. But, Android also has a ton of security apps available for REAL protection. Now Android allows you to download outside of market, and also Android has the same Bluetooth vulnerability that the iPhone has. So you still have to be careful, but its not as much of an issue.
Lookout security is currently the most complete and safe application on the Market. Its the most recommended and works well (And its also FREE). SMobile Systems’ Security Shield app ($29.99) is also good, but for 29.99, its not much better than Lookout. It really depends on how much you worry about infection.
Personally, I love Android, the best part of it, is that if you use Gmail, all of your apps, contacts, and settings are saved there. So if you DO get a bad infection and it corrupts your phone, you can just wipe it and reinstall, and it will grab all of the data from your gmail account for you.
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Other Phones
Blackberry, Nokia, etc. These phones all have the same possible vulnerabilities. RIM is actually probably the most in touch with what needs to be secured. They've been handling mobile security for years, especially because they constantly deal with large companies.
Nokia is very susceptible to Java based viruses, as is Blackberry, and many other phones. As Mr Jobs has said, Flash isn't exactly the safest thing in the world either. Hes absolutely correct. For Adobe to update Flash to the necessary security level, they would break most existant apps that are currently out there.
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Truth be told, you're always at risk. Like computers, the best protection you can POSSIBLY have is simply being careful online, make sure you're on the correct website that you expect to be, by checking the URL (Address). Don't download other things that you're not sure of. If you don't recognize the file, don't download it, and search it on google to find out what it is.
Live long and Prosper!
~Tagban
Labels: android, DROID, iOS, iPad, iPhone, iPod, Java, mobile, Nokia, security software, spyware, trojan, virus, viruses