I keep seeing icons appearing on the home screen of my Nexus 7. One is a link to an "Newest Apps" promotional webpage. Another is a whole slew of links that take me to the Google Play screen for a game I'm not interested in. There was also one for Expedia.
I remove the icons by dragging them to the trash can, but the next day I go to my home screen and there they are again.
I must have some sort of infection, but I don't know how to go about detecting it.
Can anybody help me on this?