Over 500,000 Android users have accidentally downloaded a piece of malware called SMSZombie, which is nearly impossible to uninstall and steals money from users via fraudulent SMS payments. SMSZombie, which infected users via the third-party Chinese GFan app market, hid within a series of otherwise-innocuous wallpaper apps.

Researchers at security firm TrustGo who investigated the malware found out that it stole low amounts of money from victims on a large scale in order to replenish unknown online gaming accounts. Money was stolen from users via China Mobile's SMS Payment Service, a tool which does not exist on a large scale in the United States.

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