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Posted 11 December 2013 - 07:28 PM
Posted 12 December 2013 - 10:11 AM
Posted 12 December 2013 - 05:28 PM
I think there is an observation bias here (paper #1): only smartphones that showed obvious signs of infection were counted (that's what I get from the abstract, didn't read the paper).
In the PC world, a lot of malware is stealth. If nobody sees it, nobody reports it, it is not counted.
Second: several smartphone OS's offer no API's at all for AV applications to be able to perform.
For example, in iOS, an AV app is like any other app, it has no special privileges or access so that it can monitor the phone resources for malware.
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Posted 13 December 2013 - 07:40 PM
the security settings in Android (I don't know for iOS) are very layered and split up, therefore you can control what an app can or can not do on your phone before installing it.
If you're installing a screensaver, for example, and it demands the permissions to be able to make phone calls, you might decide to go look for another screen saver. This is something that is inherently different on Windows and also in general on PCs. While you can separate between Admin and not-admin on PC, you don't separate the access to different features of the OS, so it's easier to find a process to exploit because all of them will give you the power you want on the PC.
In addition you retrieve your programs from one authorative location, normally, that makes it a lot harder to introduce malware because people will not just run that installer they got from a random website and in some cases the OS won't even allow it. So the phone OS are more secure by default.
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