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I'm using HTC desire HD with sense UI. Lately my wallpaper is being changed by the system at random (the images are some random scenery). I have checked all the recent apps I have installed, all from Google Android Market, nothing from unauthorized source. I'm suspecting It could be some malware.

Is there any way to check which process is changing the wallpaper?

Any malware check tool I can use to diagnose this problem?

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closed as too localized by Izzy, Liam W, ce4, Zuul, Flow Dec 23 '12 at 15:51

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Is it live wallpapers you're using? Just to confirm and clarify? long press on the home screen, there's Wallpapers, tap that, at least, there should be, Gallery, Live wallpapers and Wallpapers (this is on stock 2.3.7) – t0mm13b Jun 27 '12 at 15:48